{"as_of":"2026-08-06T16:27:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:abd81c1f1c300e95320b8b4a6fa81e6672e6285535a9eaf4c93ac96299275af3","coverage":[{"denominator":68,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":68,"source":"paper_references, paper_reference_links","source_observed_at":"2026-05-09T23:25:02.293293Z","state":"measured"},{"denominator":69,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":69,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-06T06:34:29.942622+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-07-11T21:32:44.641045Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2604.20975","snapshot_observed_at":"2026-07-11T21:32:44.641045Z","title":null,"venue":null,"work_id":null,"year":2026},"citing_paper":{"arxiv_id":"2607.04121","last_updated":"2026-07-09T17:42:23Z","snapshot_observed_at":"2026-08-05T09:46:46.729999Z","submitted_at":"2026-07-05T05:18:18Z","title":"Set them free: extending RAMCOAL to model massive black hole triplets in hydrodynamical simulations of galaxies","version":2},"reference_index":73,"source":"arxiv_source","source_observed_at":"2026-07-11T21:32:44.641045Z"},"links":{"cited_paper":"/paper/2604.20975","citing_paper":"/paper/2607.04121"},"observation_digest":"sha256:7afff9d87e5594aa9e5c7c9d3520bcc6c3fcb25332474eb3e717c9fbc5fc99c7","observation_id":"a44e9081-8ad1-47ca-a782-0c0590dee346","resolution":{"observed_at":"2026-07-11T21:32:44.641045Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/2604.20975/citation-record","integrity":"/paper/2604.20975/integrity","json":"/paper/2604.20975/citation-record.json","paper":"/paper/2604.20975"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"26039f9e-459e-4dba-b9af-d9bbdf5c0aab","year":null},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:3a560bd86ba8c6cfffee38b045ae2366d448b9de8165ac0b23431863ddbe4abd","observation_id":"2e33d170-6faa-44d7-97db-235302395545","resolution":{"observed_at":"2026-05-23T13:05:41.382944Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16214","last_updated":"2023-06-28T13:51:02Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2023-06-28T13:51:02Z","title":"The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals","version":1},"cited_work":{"arxiv_id":"2306.16214","doi":"10.48550/arxiv.2306.16214","metadata_source":"pith","pith_arxiv_id":"2306.16214","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals","venue":"astro-ph.HE","work_id":"64aaf45a-ea75-497c-a5be-b1b7929567c1","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16214","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:b7f32947ba047412dbab7603c4cd4e121f14925f163c8bf9d7b6074508fc7a8a","observation_id":"b221b430-988e-4e9c-bf18-2ef437a5aaec","resolution":{"observed_at":"2026-05-16T08:20:32.707737Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-05-25T16:56:11.158074+00:00","source":"crossref_status_cache"},{"observed_at":"2026-05-25T16:56:11.158074+00:00","source":"openalex_status_cache"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16213","last_updated":"2023-06-28T13:51:01Z","snapshot_observed_at":"2026-08-03T22:16:35.420460Z","submitted_at":"2023-06-28T13:51:01Z","title":"The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background","version":1},"cited_work":{"arxiv_id":"2306.16213","doi":"10.3847/2041-8213/acd","metadata_source":"pith","pith_arxiv_id":"2306.16213","snapshot_observed_at":"2026-07-11T11:50:26.030339Z","title":"The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background","venue":"astro-ph.HE","work_id":"ecdcd896-0d01-4707-9631-446c2f7bb47b","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16213","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:d292bc000d27f9a7957c8c6b1fd9676eb6d1c0affe2df988461945d8c65c94ee","observation_id":"298c7b42-4a2b-47f3-9769-471086d6e653","resolution":{"observed_at":"2026-05-12T04:09:09.532111Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-05-24T15:26:09.936705+00:00","source":"crossref_status_cache"},{"observed_at":"2026-05-24T15:26:09.936705+00:00","source":"openalex_status_cache"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16216","last_updated":"2023-06-28T13:51:04Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2023-06-28T13:51:04Z","title":"Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I","version":1},"cited_work":{"arxiv_id":"2306.16216","doi":null,"metadata_source":"pith","pith_arxiv_id":"2306.16216","snapshot_observed_at":"2026-07-10T20:27:36.654250Z","title":"Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I","venue":"astro-ph.HE","work_id":"026097ec-3d59-4324-957d-a33afc5b93d3","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16216","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:a3969eaab088b2558775b40f641856472ddb89bd4288dba76d9157c0b0599456","observation_id":"0bf12a35-c0af-4c2a-938c-05cfdc5e043f","resolution":{"observed_at":"2026-05-12T11:47:00.624757Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16215","last_updated":"2023-06-28T13:51:03Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2023-06-28T13:51:03Z","title":"Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array","version":1},"cited_work":{"arxiv_id":"2306.16215","doi":null,"metadata_source":"pith","pith_arxiv_id":"2306.16215","snapshot_observed_at":"2026-07-09T22:26:36.762998Z","title":"Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array","venue":"astro-ph.HE","work_id":"a701de45-9096-4e36-88b2-a80500e1c9ab","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16215","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:e85af1ca71191251f3dfe80e89caa6f34b0c177f7fc946939904473271d7f7ea","observation_id":"a19a4afc-58ff-4cb6-9b6f-87d5b36a69ae","resolution":{"observed_at":"2026-05-12T17:07:33.139458Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2412.01153","last_updated":"2024-12-02T05:54:18Z","snapshot_observed_at":"2026-07-06T19:59:56.438747Z","submitted_at":"2024-12-02T05:54:18Z","title":"The MeerKAT Pulsar Timing Array: The first search for gravitational waves with the MeerKAT radio telescope","version":1},"cited_work":{"arxiv_id":"2412.01153","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"2412.01153","snapshot_observed_at":"2026-07-03T23:09:01.325270Z","title":"The MeerKAT Pulsar Timing Array: The first search for gravitational waves with the MeerKAT radio telescope","venue":null,"work_id":"09981ee0-3f7d-406b-9161-1d84f3add128","year":2025},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2412.01153","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:88ea82dd2e096ec1d04cb6d0c260d010b515858f454061817e727561a30b353b","observation_id":"d1e8f930-81a9-4dfe-9bd8-5c830f68fe38","resolution":{"observed_at":"2026-05-11T14:11:04.187839Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/9412038","last_updated":"1995-02-07T22:22:46Z","snapshot_observed_at":"2026-07-07T01:10:31.617587Z","submitted_at":"1994-12-09T21:26:55Z","title":"Ultra-Low Frequency Gravitational Radiation from Massive Black Hole Binaries","version":3},"cited_work":{"arxiv_id":"astro-ph/9412038","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/9412038","snapshot_observed_at":"2026-07-10T20:27:36.687024Z","title":"Ultra-Low Frequency Gravitational Radiation from Massive Black Hole Binaries","venue":"astro-ph","work_id":"7cf4b8f9-a16b-41a4-940c-715029664496","year":1994},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/9412038","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:e914d39690444d61fd1e6bbf1aa965bec79cdf3e63d7ea7a688c686225ff10e6","observation_id":"a566aaf5-1374-495d-8b9b-d6f193d2a923","resolution":{"observed_at":"2026-05-11T14:11:04.151701Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0210148","last_updated":"2003-06-24T17:10:13Z","snapshot_observed_at":"2026-07-07T00:28:57.395976Z","submitted_at":"2002-10-07T13:35:48Z","title":"Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries","version":2},"cited_work":{"arxiv_id":"astro-ph/0210148","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0210148","snapshot_observed_at":"2026-07-09T09:56:10.323869Z","title":"Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries","venue":"astro-ph","work_id":"82f743d2-71be-44fc-a003-26108f3c8644","year":2002},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/0210148","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:cb86245d02fde3d73b1c7f0744db019b3e8ef4daa0b3a3347480ca1d31e948b7","observation_id":"1410adb8-fb6e-4eef-86b7-7cf9e72f0b61","resolution":{"observed_at":"2026-05-11T14:11:04.030779Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"6eeaa816-cbcb-4745-b8bf-a4b8883a6cff","year":1977},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:43b3411dd7de34bc0a078012c367297798f7ed255f3639a3ce48221315413bbe","observation_id":"1acdae7e-41a6-4d78-9e1b-5d44ade3faf3","resolution":{"observed_at":"2026-05-23T13:05:41.442548Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Lacey and S","venue":null,"work_id":"c31caae3-99cc-4205-b56c-8e671480f0cb","year":1993},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:d4fca0e124c50019a5fe6b6506722937a864213457eefd33653b6c1535a1ee6f","observation_id":"ed27ebb8-8e9f-4251-84be-0f92bbdb3d63","resolution":{"observed_at":"2026-05-23T13:05:41.431060Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0212459","last_updated":"2003-08-25T07:48:37Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2002-12-20T20:49:43Z","title":"Long Term Evolution of Massive Black Hole Binaries","version":2},"cited_work":{"arxiv_id":"astro-ph/0212459","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0212459","snapshot_observed_at":"2026-06-28T08:51:48.928322Z","title":"Long Term Evolution of Massive Black Hole Binaries","venue":"astro-ph","work_id":"f9a620b4-4e2f-4241-b047-a5462963dcfb","year":2002},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/0212459","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:7cc43e7de777d8c1d4e83e93a20c3ffef1596e5e9cf88f1342638e04ac565115","observation_id":"8a3e308e-f92c-4036-9e59-847b0825c1f5","resolution":{"observed_at":"2026-05-11T14:11:04.221090Z","resolver_source":"arxiv_id","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"352e4496-d18b-439e-9aef-a2427ad4b0f7","year":1980},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:375a01d9a1984dfef9e1257db4c92247b83f94fb9b1d2722a1597b2048f51442","observation_id":"bfc1395f-e099-4e21-8e75-f3650f2c0af7","resolution":{"observed_at":"2026-05-23T13:05:41.427771Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/9601092","last_updated":"1996-01-17T20:10:39Z","snapshot_observed_at":"2026-07-07T01:12:36.776963Z","submitted_at":"1996-01-17T20:10:39Z","title":"The dynamical evolution of massive black hole binaries - I. Hardening in a fixed stellar background","version":1},"cited_work":{"arxiv_id":"astro-ph/9601092","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"astro-ph/9601092","snapshot_observed_at":"2026-07-04T17:52:08.173835Z","title":null,"venue":null,"work_id":"f6da1082-cc33-42f4-87ac-171b3bb11ece","year":1996},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/9601092","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:529f3b0131bebcdde16cc9cf112ede76204b43ef27716526760e99060c8b071a","observation_id":"1bdd8ba8-69f7-44e8-b245-e866c432f5ab","resolution":{"observed_at":"2026-07-04T17:52:08.173835Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1004.3499","last_updated":"2010-04-20T16:40:35Z","snapshot_observed_at":"2026-07-06T02:09:34.720868Z","submitted_at":"2010-04-20T16:40:35Z","title":"Detection, Localization and Characterization of Gravitational Wave Bursts in a Pulsar Timing Array","version":1},"cited_work":{"arxiv_id":"1004.3499","doi":null,"metadata_source":"pith","pith_arxiv_id":"1004.3499","snapshot_observed_at":"2026-06-28T20:42:37.489625Z","title":"Detection, Localization and Characterization of Gravitational Wave Bursts in a Pulsar Timing Array","venue":"astro-ph.IM","work_id":"e99cc503-17a3-4cc8-8466-e1db63939711","year":2010},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1004.3499","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:7d708693b50dc75d92e8b4a9bf610a26b6101ede17df54f07cb44b3400b71329","observation_id":"35b6bfc9-22f5-4198-8415-dfdf32abc9ed","resolution":{"observed_at":"2026-05-11T14:11:04.135301Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1404.5682","last_updated":"2014-04-23T01:47:58Z","snapshot_observed_at":"2026-07-06T03:41:48.958841Z","submitted_at":"2014-04-23T01:47:58Z","title":"Assessing Pulsar Timing Array Sensitivity to Gravitational Wave Bursts with Memory","version":1},"cited_work":{"arxiv_id":"1404.5682","doi":"10.1088/0004-637x/788/2/141","metadata_source":"pith","pith_arxiv_id":"1404.5682","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Assessing Pulsar Timing Array Sensitivity to Gravitational Wave Bursts with Memory","venue":"astro-ph.HE","work_id":"b2bcf8dd-1186-4990-b21f-661e9cff8691","year":2014},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1404.5682","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:55532f8080f3e624a3bce1cd52643c76eac81bae7110d14b14b6d5e296d98d1e","observation_id":"7c7ee412-2c23-4e5a-b339-d2511d4bcf41","resolution":{"observed_at":"2026-05-11T14:11:04.092843Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"4da144d1-6041-415e-bc0d-8e3cc83b6e23","year":2012},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:e5e58b925699e4f71857534a8c8306e9654786d36467a39fa938ecc8096452bd","observation_id":"c63ab598-8ba1-428f-b17d-c7a12861382c","resolution":{"observed_at":"2026-05-23T13:05:41.435842Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1410.3323","last_updated":"2014-10-13T14:19:56Z","snapshot_observed_at":"2026-07-06T03:57:11.252524Z","submitted_at":"2014-10-13T14:19:56Z","title":"Searching for gravitational wave memory bursts with the Parkes Pulsar Timing Array","version":1},"cited_work":{"arxiv_id":"1410.3323","doi":null,"metadata_source":"pith","pith_arxiv_id":"1410.3323","snapshot_observed_at":"2026-07-02T00:46:25.139172Z","title":"Searching for gravitational wave memory bursts with the Parkes Pulsar Timing Array","venue":"astro-ph.GA","work_id":"a3969a8c-3c0b-49de-b766-68a931ace205","year":2014},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1410.3323","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:903613233ebe6f2b9d4ade291b53bc3a4b2889a42ad476488324271544abcebc","observation_id":"c26b6a17-7e12-498d-bfe5-f30c9aeb6642","resolution":{"observed_at":"2026-05-11T14:11:04.111992Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"a7de35cf-ade6-411f-a0a6-7c57c009c633","year":1983},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:43b69c17f28b2af19712d9413db6d5a181b54af22160bce96db6facbb28c39cd","observation_id":"78fcb25c-4555-4a10-aa58-53247e383586","resolution":{"observed_at":"2026-05-23T13:05:41.439376Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2309.00693","last_updated":"2023-09-01T18:27:16Z","snapshot_observed_at":"2026-08-03T23:13:03.689438Z","submitted_at":"2023-09-01T18:27:16Z","title":"Comparing recent PTA results on the nanohertz stochastic gravitational wave background","version":1},"cited_work":{"arxiv_id":"2309.00693","doi":"10.48550/arxiv.2309.00693","metadata_source":"pith","pith_arxiv_id":"2309.00693","snapshot_observed_at":"2026-07-10T06:15:00.866473Z","title":"Agazieet al.[International Pulsar Timing Array],Comparing recent PTA results on the nanohertz stochastic gravitational wave background,Astrophys","venue":"astro-ph.HE","work_id":"9a4c3027-c074-4c91-bc50-4446b6b13549","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2309.00693","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:3d1e94cbba022d48ee752b9d7338d6efdd0fb8a08745151e746acf7ec810fcbe","observation_id":"ab0e3af1-5e2d-4954-8165-92d657b68ac4","resolution":{"observed_at":"2026-05-11T14:11:04.106299Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16219","last_updated":"2023-06-28T13:51:07Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2023-06-28T13:51:07Z","title":"The NANOGrav 15-year Data Set: Search for Signals from New Physics","version":1},"cited_work":{"arxiv_id":"2306.16219","doi":null,"metadata_source":"pith","pith_arxiv_id":"2306.16219","snapshot_observed_at":"2026-07-10T14:47:14.150822Z","title":"The NANOGrav 15-year Data Set: Search for Signals from New Physics","venue":"astro-ph.HE","work_id":"b174cd56-be02-4083-9bbc-7c59fc3b059b","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16219","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:c0ca0e199b1a20e4d6a7720842e7d84b46f55e6dd1b4518bc57994f7123b7027","observation_id":"89a5ce7d-77b1-49a8-88d8-e1151fad7cb6","resolution":{"observed_at":"2026-05-16T05:38:47.683766Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16227","last_updated":"2024-05-15T21:59:54Z","snapshot_observed_at":"2026-08-06T13:58:22.947589Z","submitted_at":"2023-06-28T13:51:15Z","title":"The second data release from the European Pulsar Timing Array: IV. Implications for massive black holes, dark matter and the early Universe","version":2},"cited_work":{"arxiv_id":"2306.16227","doi":"10.48550/arxiv.2306.16227","metadata_source":"pith","pith_arxiv_id":"2306.16227","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Antoniadis et al","venue":"astro-ph.CO","work_id":"2a060b09-7a5c-4887-b709-77c27476b25d","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16227","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:afce13d244ad1174c8df5eeaf1d3f8bb99e1d7351347723dda48a1dec0aff720","observation_id":"b593688a-10d9-42cc-a2bf-e45255fb60e6","resolution":{"observed_at":"2026-05-11T14:11:04.141628Z","resolver_source":"arxiv_id","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1306.5394","last_updated":"2013-09-07T02:12:58Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2013-06-23T11:31:37Z","title":"Characterising gravitational wave stochastic background anisotropy with Pulsar Timing Arrays","version":2},"cited_work":{"arxiv_id":"1306.5394","doi":null,"metadata_source":"pith","pith_arxiv_id":"1306.5394","snapshot_observed_at":"2026-07-09T09:56:10.408902Z","title":"Characterising gravitational wave stochastic background anisotropy with Pulsar Timing Arrays","venue":"astro-ph.HE","work_id":"f5c28b87-c3ce-4e1a-a5fb-9573e108d4f6","year":2013},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1306.5394","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:11401f5db3eb62d0e4a40ac03f82080b573a129d156f999ff926ebbbcf6982ac","observation_id":"7a4d2dc4-3a67-4f4a-806e-4565ece2b71f","resolution":{"observed_at":"2026-05-11T14:11:04.123252Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2402.17312","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"8ab64ce6-f330-48ef-86aa-eb1eb5e09e1e","year":2024},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:0b3b87e7524f4c9257fa6acf4acba7962c4a7398670f835cbdf795b8d532da1d","observation_id":"5d9dc822-f223-482d-a9d6-521c2a012031","resolution":{"observed_at":"2026-05-11T14:11:04.119595Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2412.01899","last_updated":"2024-12-02T19:00:03Z","snapshot_observed_at":"2026-07-06T20:00:28.112838Z","submitted_at":"2024-12-02T19:00:03Z","title":"From eccentric binaries to nonstationary gravitational wave backgrounds","version":1},"cited_work":{"arxiv_id":"2412.01899","doi":null,"metadata_source":"pith","pith_arxiv_id":"2412.01899","snapshot_observed_at":"2026-07-09T09:56:10.568274Z","title":"Falxa, H","venue":"gr-qc","work_id":"9fc1feeb-5a3e-4a50-b016-590cda571405","year":2024},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":24,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2412.01899","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:2aab4c8c038490de0c65508b0a9979c94048def8f25618dd05508049f496c8be","observation_id":"11e3aea8-5d4b-4c2c-9211-d174c6f37f71","resolution":{"observed_at":"2026-05-11T14:11:04.074208Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2511.09659","last_updated":"2026-06-26T16:07:05Z","snapshot_observed_at":"2026-08-03T22:40:15.951793Z","submitted_at":"2025-11-12T19:05:59Z","title":"Finite Populations & Finite Time: The Non-Gaussianity of a Gravitational Wave Background","version":4},"cited_work":{"arxiv_id":"2511.09659","doi":"10.48550/arxiv.2511.09659","metadata_source":"pith","pith_arxiv_id":"2511.09659","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Finite Populations & Finite Time: The Non-Gaussianity of a Gravitational Wave Background","venue":"gr-qc","work_id":"21da8eb8-4fa1-4d11-ad9c-87c8877bc032","year":2025},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2511.09659","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:14b417444fa3ab1772d89770a846f63ebadd09ca99b1016f112986bdd0597ac7","observation_id":"1efc84c6-8c10-407c-b8c3-b3e440fc626a","resolution":{"observed_at":"2026-05-21T02:04:08.593333Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2508.08365","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-07-03T23:09:01.330338Z","title":"Falxa and A","venue":null,"work_id":"b6c170a6-5e54-4301-a5d5-941dbcad403b","year":2026},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":26,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:c67b14d2af0afc965e7993cd632274bdc1268da844651683853dcb1a52aa89d1","observation_id":"a2491d8d-ac5e-4d60-b2e6-6b1021512266","resolution":{"observed_at":"2026-05-11T14:11:04.100591Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2405.03295","last_updated":"2024-05-06T09:16:50Z","snapshot_observed_at":"2026-07-06T18:10:16.760984Z","submitted_at":"2024-05-06T09:16:50Z","title":"Modeling non stationary noise in pulsar timing array data analysis","version":1},"cited_work":{"arxiv_id":"2405.03295","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"2405.03295","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Falxaet al., Modeling nonstationary noise in pulsar timing array data analysis, Phys","venue":null,"work_id":"52270657-43cd-4210-b639-936f3cd8b608","year":2024},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":27,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2405.03295","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:5bbd1cbd09e8beaecf49332a12afb233abd0b4e0ae8e31923a06e090cb833acc","observation_id":"3e7daba3-f465-4382-b5fc-0b63c060d53f","resolution":{"observed_at":"2026-05-11T14:11:04.078507Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2412.01214","last_updated":"2024-12-02T07:35:14Z","snapshot_observed_at":"2026-07-06T20:00:00.800207Z","submitted_at":"2024-12-02T07:35:14Z","title":"The MeerKAT Pulsar Timing Array: Maps of the gravitational-wave sky with the 4.5 year data release","version":1},"cited_work":{"arxiv_id":"2412.01214","doi":"10.48550/arxiv.2412.01214","metadata_source":"pith","pith_arxiv_id":"2412.01214","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"S., Thrane, E., et al","venue":"astro-ph.HE","work_id":"5e87e77c-0f06-4b54-a80a-f1f6e1ebd95e","year":2024},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":28,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2412.01214","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:25ea59ed5c408d7399f7d8be0031d8ee20b2d16c4aa818c3439b6a58114d4096","observation_id":"24f4980a-0e32-44b6-b3af-0878064da90f","resolution":{"observed_at":"2026-05-11T14:11:04.128582Z","resolver_source":"arxiv_id","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16221","last_updated":"2023-06-28T13:51:09Z","snapshot_observed_at":"2026-07-06T15:47:49.817608Z","submitted_at":"2023-06-28T13:51:09Z","title":"The NANOGrav 15-year Data Set: Search for Anisotropy in the Gravitational-Wave Background","version":1},"cited_work":{"arxiv_id":"2306.16221","doi":"10.48550/arxiv.2306.16221","metadata_source":"arxiv_reference","pith_arxiv_id":"2306.16221","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Agazie et al","venue":"arXiv (Cornell University)","work_id":"9632c294-0c43-4d98-a58e-287ef8747b7b","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":29,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16221","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:9a8ff16eadf5654f8309bbbe2c5cb9ccdeff506a722e5792d21a4ff0fda5958f","observation_id":"1767ec7c-aba6-4be7-b694-aa5c9fa85146","resolution":{"observed_at":"2026-05-11T14:11:04.052694Z","resolver_source":"arxiv_id","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2602.11529","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Chenet al., Phys","venue":null,"work_id":"5e10443b-a860-45a4-84dc-9d4625eeea32","year":2026},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":30,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:87e3daff5ccc5aa02c0d60954a1d8ba972418b56dc491e41d0805114ae3628b5","observation_id":"44fc1c51-42fd-4761-8047-076fe4ddd49a","resolution":{"observed_at":"2026-05-11T14:11:04.034454Z","resolver_source":"arxiv_id","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0107470","last_updated":"2001-07-24T22:54:44Z","snapshot_observed_at":"2026-07-07T00:20:05.162022Z","submitted_at":"2001-07-24T22:54:44Z","title":"Using Pulsars to Detect Massive Black Hole Binaries via Gravitational Radiation: Sagittarius A* and Nearby Galaxies","version":1},"cited_work":{"arxiv_id":"astro-ph/0107470","doi":"10.1086/323491","metadata_source":"pith","pith_arxiv_id":"astro-ph/0107470","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Using Pulsars to Detect Massive Black Hole Binaries via Gravitational Radiation: Sagittarius A* and Nearby Galaxies","venue":"astro-ph","work_id":"694635d2-baea-4157-a5d4-95c747868e8b","year":2001},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":31,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/0107470","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:bc180e309a6f025304835d4d6a1a07c5f06f4b347d01e6a2bd538e3f9f52e982","observation_id":"505507f0-ec71-4d25-b05b-8bed7502c0bb","resolution":{"observed_at":"2026-05-11T14:11:04.175746Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0809.3412","last_updated":"2009-03-25T19:19:29Z","snapshot_observed_at":"2026-07-06T01:43:41.080010Z","submitted_at":"2008-09-19T16:32:17Z","title":"Gravitational waves from resolvable massive black hole binary systems and observations with Pulsar Timing Arrays","version":2},"cited_work":{"arxiv_id":"0809.3412","doi":null,"metadata_source":"pith","pith_arxiv_id":"0809.3412","snapshot_observed_at":"2026-07-09T09:56:10.476746Z","title":"Gravitational waves from resolvable massive black hole binary systems and observations with Pulsar Timing Arrays","venue":"astro-ph","work_id":"ef93ed3e-2aea-4733-b824-c6581ef078b1","year":2008},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/0809.3412","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:3454f219bf1296a4aff4ca4cd1b6c42e12a419602825b64653bc22eb6960ff48","observation_id":"8731bbb5-05ee-4e15-a1d2-e11cff8d9f01","resolution":{"observed_at":"2026-05-11T14:11:04.146133Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1505.06208","last_updated":"2015-12-04T21:15:51Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2015-05-22T20:00:39Z","title":"Detecting eccentric supermassive black hole binaries with pulsar timing arrays: Resolvable source strategies","version":3},"cited_work":{"arxiv_id":"1505.06208","doi":null,"metadata_source":"pith","pith_arxiv_id":"1505.06208","snapshot_observed_at":"2026-06-30T23:15:07.583322Z","title":"Detecting eccentric supermassive black hole binaries with pulsar timing arrays: Resolvable source strategies","venue":"gr-qc","work_id":"c36a941f-ecfd-4e95-a94a-acd5169664b8","year":2015},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1505.06208","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:355ae2898cb64d0e1a7a24051c7c414f5d65ecfaa3a75471267a1a5715cd2804","observation_id":"e43eb846-c01a-44c8-a404-20ae61cd2a4c","resolution":{"observed_at":"2026-05-11T14:11:04.021286Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16222","last_updated":"2023-06-28T13:51:10Z","snapshot_observed_at":"2026-07-06T15:47:49.817608Z","submitted_at":"2023-06-28T13:51:10Z","title":"The NANOGrav 15-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries","version":1},"cited_work":{"arxiv_id":"2306.16222","doi":"10.48550/arxiv.2306.16222","metadata_source":"pith","pith_arxiv_id":"2306.16222","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Agazie et al","venue":"astro-ph.HE","work_id":"2f1fcd5f-e9b2-4649-a65d-8fe2236ed823","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":34,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16222","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:8e4984936b42720d24f3cd40e64573f368369ae5f07475eed0b56fe45fab97e7","observation_id":"158775b3-c12c-42c1-ac1c-c8e958a6df1f","resolution":{"observed_at":"2026-05-11T14:11:04.011993Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16226","last_updated":"2024-06-25T05:59:51Z","snapshot_observed_at":"2026-08-02T01:59:26.857447Z","submitted_at":"2023-06-28T13:51:14Z","title":"The second data release from the European Pulsar Timing Array V. Search for continuous gravitational wave signals","version":3},"cited_work":{"arxiv_id":"2306.16226","doi":"10.48550/arxiv.2306.16226","metadata_source":"pith","pith_arxiv_id":"2306.16226","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Antoniadis et al","venue":"astro-ph.HE","work_id":"05c79a08-c677-4411-96f2-40e51ddac933","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":35,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16226","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:537c3c580c24a3558265101a15e8a4664ea85fb1c68ec3366c6a34a796f3bfb6","observation_id":"2b2d1228-ef2f-40ac-a4c1-a0b89ef28120","resolution":{"observed_at":"2026-05-11T14:11:04.156627Z","resolver_source":"arxiv_id","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Pitkin, J","venue":null,"work_id":"c7f37122-11b4-415b-b3e0-0f481b7dee23","year":2008},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":36,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:7e7e7cd1292d7b54f9f128540676e673556e2716afa1cdc3fc6fff2254cf876e","observation_id":"8c361ae0-7b92-4279-8103-9ebcf310b166","resolution":{"observed_at":"2026-05-23T13:05:41.417989Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1107.5984","last_updated":"2013-01-19T11:45:58Z","snapshot_observed_at":"2026-08-06T15:08:16.696726Z","submitted_at":"2011-07-29T14:40:01Z","title":"On the complementarity of pulsar timing and space laser interferometry for the individual detection of supermassive black hole binaries","version":3},"cited_work":{"arxiv_id":"1107.5984","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1107.5984","snapshot_observed_at":"2026-07-04T18:23:04.709116Z","title":null,"venue":null,"work_id":"ee497105-a0fc-4490-8612-fa924bc68a01","year":2013},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":37,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1107.5984","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:0659239db09362f2d6ae65ae242eb9ef558e09c6dfe57e18469f00e098b83861","observation_id":"6bf340d3-da17-413b-868c-36283a87790c","resolution":{"observed_at":"2026-07-04T18:23:04.709116Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Detweiler, Pulsar timing measurements and the search for gravitational waves, ApJ234, 1100 (1979)","venue":null,"work_id":"0eae78e8-6a91-4fe5-9399-032232b32515","year":1979},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":38,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:bf603f5ec2ff0a2e379bbee68d407e37df509a86f8d7f6c37516691b3d6c72c4","observation_id":"a398be64-14f8-4e1d-ac75-20f3702199d8","resolution":{"observed_at":"2026-05-23T13:05:41.421300Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1003.0677","last_updated":"2010-03-02T21:03:00Z","snapshot_observed_at":"2026-08-04T22:14:46.483847Z","submitted_at":"2010-03-02T21:03:00Z","title":"Measuring the parameters of massive black hole binary systems with Pulsar Timing Array observations of gravitational waves","version":1},"cited_work":{"arxiv_id":"1003.0677","doi":null,"metadata_source":"pith","pith_arxiv_id":"1003.0677","snapshot_observed_at":"2026-07-09T09:56:10.636920Z","title":"Measuring the parameters of massive black hole binary systems with Pulsar Timing Array observations of gravitational waves","venue":"astro-ph.CO","work_id":"49498b34-b995-4404-ac8d-016ffbbb6316","year":2010},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":39,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1003.0677","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:30eabf53165ccb61ea5c907e20236bc4bb68d823cec1036c3894a52d2a6b4968","observation_id":"8ed19d1f-de1d-44c8-ab45-33dd70a748fc","resolution":{"observed_at":"2026-05-11T14:11:04.018150Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-07-08T17:55:21.081607Z","title":null,"venue":null,"work_id":"5b2a2894-312c-4f12-a2f7-e12d10c1bf6c","year":1964},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":40,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:f9e27eb364691e6aa5c5b1c07648d58e6d8797b2c0f0667e5042b11173d295d4","observation_id":"a2b051d0-9b24-4673-85a6-78b6013b281b","resolution":{"observed_at":"2026-05-23T13:05:41.410093Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"345272f9-ac99-4803-b82d-4edfd8f1e683","year":1963},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":41,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:b41e9ce1c57852cdc995e89f3b9cc7b0fbbb54643552b0782fabd103b7511cd6","observation_id":"3d0f2005-5731-4ea5-a0cc-51027c407802","resolution":{"observed_at":"2026-05-23T13:05:41.406156Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0404389","last_updated":"2004-07-15T13:51:09Z","snapshot_observed_at":"2026-07-07T00:42:01.009554Z","submitted_at":"2004-04-20T18:09:29Z","title":"Gravitational Waves from Supermassive Black Hole Coalescence in a Hierarchical Galaxy Formation Model","version":2},"cited_work":{"arxiv_id":"astro-ph/0404389","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0404389","snapshot_observed_at":"2026-07-09T09:56:10.291250Z","title":"Enoki, K","venue":"astro-ph","work_id":"e1f9452d-124b-447c-b60e-ee6684fb0b2c","year":2004},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":42,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/0404389","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:2fcdefe2f0ba186fbebee313659972c459a41d651f13bab97ca0fdf0f67458f6","observation_id":"e7907d95-08d3-4cdd-b7ba-cde2fad1431c","resolution":{"observed_at":"2026-05-11T14:11:04.025384Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0804.4476","last_updated":"2008-07-04T17:45:41Z","snapshot_observed_at":"2026-07-06T01:41:34.504301Z","submitted_at":"2008-04-28T20:05:44Z","title":"The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays","version":2},"cited_work":{"arxiv_id":"0804.4476","doi":null,"metadata_source":"pith","pith_arxiv_id":"0804.4476","snapshot_observed_at":"2026-07-09T09:56:10.446274Z","title":"The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays","venue":"astro-ph","work_id":"0b503026-ce14-493f-936e-7745c57036e2","year":2008},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":43,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/0804.4476","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:acada11d428692b68aa7df61b75524b7323f87274155abf199bcfc15c33e3e3b","observation_id":"18ea3b7c-74e2-4968-b632-dc3ed5555e4c","resolution":{"observed_at":"2026-05-11T14:11:04.063473Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1810.04184","last_updated":"2019-07-24T09:22:37Z","snapshot_observed_at":"2026-07-06T07:07:02.715882Z","submitted_at":"2018-10-09T18:00:14Z","title":"Constraining astrophysical observables of Galaxy and Supermassive Black Hole Binary Mergers using Pulsar Timing Arrays","version":2},"cited_work":{"arxiv_id":"1810.04184","doi":null,"metadata_source":"pith","pith_arxiv_id":"1810.04184","snapshot_observed_at":"2026-07-07T23:34:19.501193Z","title":"Constraining astrophysical observables of Galaxy and Supermassive Black Hole Binary Mergers using Pulsar Timing Arrays","venue":"astro-ph.GA","work_id":"a08f9688-27f8-443a-8f77-2fb2a51ace27","year":2018},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":44,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1810.04184","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:d7e59d7ee2557d643f5f3a2ef4932ebfd38ee35216b954fb2018a973e306a55b","observation_id":"e20b4eed-6830-471b-9d0c-51a926768cc6","resolution":{"observed_at":"2026-05-11T14:11:04.248562Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1807.06209","last_updated":"2021-08-09T10:43:18Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2018-07-17T04:05:07Z","title":"Planck 2018 results. VI. Cosmological parameters","version":4},"cited_work":{"arxiv_id":"1807.06209","doi":"10.1007/jhep11(2024)108","metadata_source":"pith","pith_arxiv_id":"1807.06209","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Planck 2018 results. VI. Cosmological parameters","venue":"astro-ph.CO","work_id":"eeae0089-7b56-4c63-ace2-a31de468f6c5","year":2018},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":45,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1807.06209","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:478479b714c6642232bd918a02d59eb1b6b814d6a21f435e168762e08959bea2","observation_id":"7e189f63-b4b4-4a86-b329-a425a382041b","resolution":{"observed_at":"2026-05-11T14:11:04.262387Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Daley and D","venue":null,"work_id":"82ddda07-cc25-4e82-ad4e-bacfa46a7aaa","year":2013},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":46,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:8005923311860a154128b350568a2159ee86ea29f207144390b1e63edbbed6b7","observation_id":"9184306b-9616-407a-bd64-06799b5a2400","resolution":{"observed_at":"2026-05-23T13:05:41.414218Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1507.00992","last_updated":"2015-10-08T16:47:34Z","snapshot_observed_at":"2026-07-06T04:22:49.525954Z","submitted_at":"2015-07-03T19:43:38Z","title":"Astrophysical constraints on massive black hole binary evolution from Pulsar Timing Arrays","version":2},"cited_work":{"arxiv_id":"1507.00992","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1507.00992","snapshot_observed_at":"2026-07-04T20:40:08.063753Z","title":"Middleton, W","venue":null,"work_id":"8df7e28a-6fcd-47a4-b901-77185b15a822","year":2016},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":47,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1507.00992","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:e91d7430d239818f31c197a17037804e85dc0f10874290eaed90de86968e0a4e","observation_id":"dc2b04eb-9c17-4c7d-953e-32d2e930400a","resolution":{"observed_at":"2026-07-04T20:40:08.063753Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2305.05690","last_updated":"2025-08-25T14:12:49Z","snapshot_observed_at":"2026-07-06T15:25:16.703799Z","submitted_at":"2023-05-09T18:00:02Z","title":"Exploring the spectrum of stochastic gravitational-wave anisotropies with pulsar timing arrays","version":2},"cited_work":{"arxiv_id":"2305.05690","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"2305.05690","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Sato-Polito and M","venue":null,"work_id":"a483ffcf-a283-4d8e-b1f0-71033bac3da1","year":2025},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":48,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2305.05690","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:50d8311cf15de028db904d519cb7dc29d669f4daddd85645d826a2dfc19d69a0","observation_id":"b8aea424-2f09-416d-99ab-5d582ea5f28d","resolution":{"observed_at":"2026-05-11T14:11:04.269846Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0108028","last_updated":"2001-08-02T00:24:40Z","snapshot_observed_at":"2026-07-06T02:11:23.670680Z","submitted_at":"2001-08-02T00:24:40Z","title":"A Practical Theorem on Gravitational Wave Backgrounds","version":1},"cited_work":{"arxiv_id":"astro-ph/0108028","doi":"10.48550/arxiv.astro-ph/0108028","metadata_source":"pith","pith_arxiv_id":"astro-ph/0108028","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"A Practical Theorem on Gravitational Wave Backgrounds","venue":"astro-ph","work_id":"db82e604-7d41-4806-994f-6620fd0543f3","year":2001},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":49,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/astro-ph/0108028","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:a333773f3aa845844a3bdd7fb3a5258dcce0f3761aa4e31e9099ad6af0863a32","observation_id":"0c8242df-ee65-4915-9d89-a2cba9710ab0","resolution":{"observed_at":"2026-05-13T17:42:53.699162Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-07-13T22:22:07.921557+00:00","source":"crossref_status_cache"},{"observed_at":"2026-07-13T22:22:07.921557+00:00","source":"openalex_status_cache"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16220","last_updated":"2023-07-18T21:46:28Z","snapshot_observed_at":"2026-07-06T15:47:49.817608Z","submitted_at":"2023-06-28T13:51:08Z","title":"The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background","version":2},"cited_work":{"arxiv_id":"2306.16220","doi":"10.48550/arxiv.2306.16220","metadata_source":"pith","pith_arxiv_id":"2306.16220","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"Agazie et al","venue":"astro-ph.HE","work_id":"f2d5a5d8-e2e1-43ee-a822-d2a50ad610c9","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":50,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16220","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:33efac4415ea73c142b907e482ae44ebb85aa6c85cffafa4d97ecf55f28a8ab4","observation_id":"6f251cd7-e194-40a6-9f54-d6d8c01a4c23","resolution":{"observed_at":"2026-05-11T14:11:04.259135Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1407.1838","last_updated":"2014-07-07T20:00:02Z","snapshot_observed_at":"2026-08-02T07:31:17.236153Z","submitted_at":"2014-07-07T20:00:02Z","title":"New advances in the Gaussian-process approach to pulsar-timing data analysis","version":1},"cited_work":{"arxiv_id":"1407.1838","doi":"10.1103/physrevd.90.104012","metadata_source":"pith","pith_arxiv_id":"1407.1838","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"van Haasteren and M","venue":"gr-qc","work_id":"1a58354b-f514-4496-8359-92db6c49bb55","year":2014},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":51,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1407.1838","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:445446dbe9da1514dba026d60f5678914585b0d8e0896ec4789b637b82060ea0","observation_id":"e313b830-91ff-4097-946f-f42ca8f439dc","resolution":{"observed_at":"2026-05-11T14:11:04.237839Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-07-13T10:49:58.178375+00:00","source":"crossref_status_cache"},{"observed_at":"2026-07-13T10:49:58.178375+00:00","source":"openalex_status_cache"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"d325151c-3d8a-473f-8dc6-d367003e2870","year":2020},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":52,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:6f6b68fd007648761e156cfe501d3751b158742ef7277853c9b0a793818c9bac","observation_id":"0ed6268c-6865-47ba-8f12-e14dcce52b6b","resolution":{"observed_at":"2026-05-23T13:05:41.424551Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":null,"venue":null,"work_id":"abf8a219-21e7-4d3d-84d2-90774a623ac0","year":2018},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":53,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:ad097f323d728124b1a5f4e6bc60a0639aabde36b0b9a1d5415e18d77c3f26b6","observation_id":"4356ea76-2331-4138-9148-cb51360d0dcd","resolution":{"observed_at":"2026-05-23T13:05:41.446560Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1907.04341","last_updated":"2019-07-09T18:01:12Z","snapshot_observed_at":"2026-07-06T08:06:38.202146Z","submitted_at":"2019-07-09T18:01:12Z","title":"Realistic sensitivity curves for pulsar timing arrays","version":1},"cited_work":{"arxiv_id":"1907.04341","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1907.04341","snapshot_observed_at":"2026-07-03T23:09:01.320073Z","title":"Realistic sensitivity curves for pul- sar timing arrays","venue":null,"work_id":"24d72275-6b39-4e11-a383-fb0eeb94e49b","year":2019},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":54,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1907.04341","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:4e9791d07d7dd2a89a0851e8e99e02e2dc62cd69f462aaffa4a24e81e7e3d8fb","observation_id":"77701db8-466a-4c5b-8be8-e216b4c6e741","resolution":{"observed_at":"2026-05-11T14:11:04.252219Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1406.5199","last_updated":"2015-03-12T11:40:53Z","snapshot_observed_at":"2026-07-06T03:46:49.763225Z","submitted_at":"2014-06-19T20:06:43Z","title":"Estimating the sensitivity of pulsar timing arrays","version":2},"cited_work":{"arxiv_id":"1406.5199","doi":null,"metadata_source":"pith","pith_arxiv_id":"1406.5199","snapshot_observed_at":"2026-06-30T01:24:08.929088Z","title":"Estimating the sensitivity of pulsar timing arrays","venue":"astro-ph.IM","work_id":"c4bcb763-5ae0-4632-85d8-65b6c247736b","year":2014},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":55,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1406.5199","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:48084e112144d6d7cfc7cc83f14e698e98ec80ae6ccb3bbf813e64bf3db769e6","observation_id":"2605fabd-8e9e-4fd9-a818-c210a50d2a69","resolution":{"observed_at":"2026-05-11T14:11:04.296029Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2306.16224","last_updated":"2023-06-28T13:51:12Z","snapshot_observed_at":"2026-07-06T15:47:49.817608Z","submitted_at":"2023-06-28T13:51:12Z","title":"The second data release from the European Pulsar Timing Array I. The dataset and timing analysis","version":1},"cited_work":{"arxiv_id":"2306.16224","doi":"10.48550/arxiv.2306.16224","metadata_source":"arxiv_reference","pith_arxiv_id":"2306.16224","snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"The dataset and timing analysis,Astron","venue":"PUB – Publications at Bielefeld University (Bielefeld University)","work_id":"593ddb23-1dd1-4d02-84f2-359c96c72d7a","year":2023},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":56,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2306.16224","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:654c2e18c5fc034c2e9b65afd3ff3eb522da0699928588d4e0aaefa5f83a954d","observation_id":"eb2258cb-91e8-4273-a11f-a07da94cdc63","resolution":{"observed_at":"2026-05-11T14:11:04.290996Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2512.16163","doi":"10.48550/arxiv.2512.16163","metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-05T02:28:24.338817Z","title":"and Bhat, N","venue":"ArXiv.org","work_id":"67b8cf27-4c99-411b-ae60-247291eb9834","year":2025},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":57,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:8a2018a68b9ced818348a0a741aee2e22feb75127a29f90cc518a7429ac5b66e","observation_id":"2075d11f-63e7-492e-962e-c75ffb96604f","resolution":{"observed_at":"2026-05-11T14:11:04.194304Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1501.00127","last_updated":"2014-12-31T12:53:40Z","snapshot_observed_at":"2026-07-06T04:05:04.005841Z","submitted_at":"2014-12-31T12:53:40Z","title":"Gravitational wave astronomy with the SKA","version":1},"cited_work":{"arxiv_id":"1501.00127","doi":null,"metadata_source":"pith","pith_arxiv_id":"1501.00127","snapshot_observed_at":"2026-07-04T18:10:02.215227Z","title":"Gravitational wave astronomy with the SKA","venue":"astro-ph.IM","work_id":"8e6e5d7c-f2b1-4ef3-9e89-5a61ddbfc0ad","year":2014},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":58,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1501.00127","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:0c28055c1eece106e524359df8918f0fd7cd6d5488cedb4344a974fd3bff0a91","observation_id":"f4708ddd-14dd-46b0-ac87-ce89dfdc3ca7","resolution":{"observed_at":"2026-05-11T14:11:04.201451Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"edu/research/parallax/, version used: March","venue":null,"work_id":"326190cf-72d8-4d55-9800-a09df9096bc6","year":2025},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":59,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:d888d3cc5ef8619f28a796c8915ea3c2c8ddaea29ae89ef1ccf5af4244d79aba","observation_id":"a9d839ca-40fa-4bd3-afec-b741c2c1f621","resolution":{"observed_at":"2026-05-23T13:05:41.402310Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2406.05125","last_updated":"2024-12-13T11:00:11Z","snapshot_observed_at":"2026-07-06T18:27:15.980730Z","submitted_at":"2024-06-07T17:55:08Z","title":"Eccentricity effects on the supermassive black hole gravitational wave background","version":2},"cited_work":{"arxiv_id":"2406.05125","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"2406.05125","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Raidal, J","venue":null,"work_id":"d6d4353a-de69-452c-b013-efa102a2aa13","year":2024},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":60,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2406.05125","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:2013c15d4500bd414605e392a978f2a0413eed2a503909565a5c177686211c7f","observation_id":"9b474c27-5e81-4b92-8d22-1072b10b1bb2","resolution":{"observed_at":"2026-05-11T14:11:04.208084Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2506.16539","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Fastidio, E","venue":null,"work_id":"88821712-5725-4ec9-971c-97674546d6cc","year":2025},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":61,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:74372a780924af1e839d78e66a46f63c50c424b51d1579546d03c182f79e720d","observation_id":"2001576e-d7b4-4b8a-9df5-3596022d65c0","resolution":{"observed_at":"2026-05-11T14:11:04.211872Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1808.09046","last_updated":"2019-04-15T12:37:17Z","snapshot_observed_at":"2026-08-06T13:36:39.824253Z","submitted_at":"2018-08-27T22:07:26Z","title":"Microarcsecond VLBI pulsar astrometry with PSR$\\pi$ II. parallax distances for 57 pulsars","version":2},"cited_work":{"arxiv_id":"1808.09046","doi":null,"metadata_source":"pith","pith_arxiv_id":"1808.09046","snapshot_observed_at":"2026-06-28T21:52:39.427404Z","title":"Microarcsecond VLBI pulsar astrometry with PSR$\\pi$ II. parallax distances for 57 pulsars","venue":"astro-ph.IM","work_id":"16deb67b-fbd7-434e-bf68-7776653ee442","year":2018},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":62,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1808.09046","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:a65703dbc50ccaee00b105a56870b1690726e4d80b67a1ab408d49d814e56e98","observation_id":"af39c52e-6ba3-49a4-add4-46903e8a1667","resolution":{"observed_at":"2026-05-11T14:11:04.228595Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1101.5971","last_updated":"2011-02-17T11:23:01Z","snapshot_observed_at":"2026-07-06T02:22:46.761702Z","submitted_at":"2011-01-31T14:01:13Z","title":"Prospects for accurate distance measurements of pulsars with the SKA: enabling fundamental physics","version":3},"cited_work":{"arxiv_id":"1101.5971","doi":null,"metadata_source":"pith","pith_arxiv_id":"1101.5971","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Prospects for accurate distance measurements of pulsars with the SKA: enabling fundamental physics","venue":"astro-ph.IM","work_id":"a3ffb663-0736-4d7f-b7e2-2f5294a9fe70","year":2011},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":63,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/1101.5971","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:d24484b72881deabb0811c0fa07f4af40ed8aa7d25604cfc68b6b2dd84acb93a","observation_id":"dfc37b74-46e0-4160-9e10-67b4b9f8111c","resolution":{"observed_at":"2026-05-11T14:11:04.172268Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2206.14220","last_updated":"2022-06-28T18:01:54Z","snapshot_observed_at":"2026-07-06T13:25:39.576741Z","submitted_at":"2022-06-28T18:01:54Z","title":"The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package","version":1},"cited_work":{"arxiv_id":"2206.14220","doi":"10.3847/1538-4357/ac7c74","metadata_source":"doi_reference","pith_arxiv_id":"2206.14220","snapshot_observed_at":"2026-07-11T11:50:26.030339Z","title":"The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package","venue":"astro-ph.IM","work_id":"9813b49d-cd2b-4c8c-a781-07e55454f120","year":2022},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":64,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"cited_paper":"/paper/2206.14220","citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:e71e2a1eb7cc438ee262809274e66a216bbdd9d88b5e05c011f80e2a9bf96106","observation_id":"1d3fe539-680e-459c-b8f6-21d03842e93d","resolution":{"observed_at":"2026-05-11T14:11:04.164646Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-01T04:38:13.296084+00:00","source":"crossref_status_cache"},{"observed_at":"2026-08-01T04:38:13.296084+00:00","source":"openalex_status_cache"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Foreman-Mackey, corner.py: Scatterplot matrices in python, The Journal of Open Source Software1, 24 (2016)","venue":null,"work_id":"07cb5eea-45ce-4365-852c-e6ffff87f8be","year":2016},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":65,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:1219e8200d3b5f2643a59a4ef94c3250718150f76fe80848239cdce09d621ad2","observation_id":"2fec8a9c-a81c-4fee-a8ea-a9b4f4d8955c","resolution":{"observed_at":"2026-05-23T13:05:41.394302Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Bradburyet al., JAX: composable transformations of Python+NumPy programs (2018)","venue":null,"work_id":"857b8007-6a37-4757-a726-6b479de3194e","year":2018},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":66,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:082b80b7851c3ec3e694e5c370ee6163297d73480f9ca38c885695a791b3ee05","observation_id":"7541638f-05ab-41d8-9767-647c31596380","resolution":{"observed_at":"2026-05-23T13:05:41.390431Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-07-08T09:14:47.951986Z","title":null,"venue":null,"work_id":"edbd5d9c-488f-4d29-88e0-6530336c4d46","year":2020},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":67,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:2c028bffe589fe99fa6dd1363b3c6eef9c9483be220272844c13fb6af05424d9","observation_id":"20a870af-2d01-439a-bd5b-e35bf34bb8c7","resolution":{"observed_at":"2026-05-23T13:05:41.397985Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Virtanenet al., SciPy 1.0: Fundamental Algorithms for Scientific Computing in Python, Nature Methods17, 261 (2020)","venue":null,"work_id":"cc4cc413-8b9a-4560-af98-077d46f01aa4","year":2020},"citing_paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays","version":1},"reference_index":68,"source":"pdf_text","source_observed_at":"2026-05-09T23:25:02.293293Z"},"links":{"citing_paper":"/paper/2604.20975"},"observation_digest":"sha256:436a5f6a164a480fb7101f896c13d537e1d6b3c4621cd38cf9b3c1375d8d2171","observation_id":"8d4f1e12-822c-4d14-911a-20f74c6c8832","resolution":{"observed_at":"2026-05-23T13:05:41.386645Z","resolver_source":"raw_fallback","status":"malformed_identifier"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-06T06:34:29.942622+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"2604.20975","last_updated":"2026-04-22T18:06:01Z","latest_version":1,"primary_category":"astro-ph.HE","snapshot_observed_at":"2026-08-02T22:01:49.458106Z","submitted_at":"2026-04-22T18:06:01Z","title":"Probing Supermassive Black Hole Mergers with Pulsar Timing Arrays"},"reference_resolution":{"displayed":68,"state_counts":{"malformed_identifier":1,"metadata_mismatch":6,"parse_uncertain":0,"unresolved":10,"verified_exact":44,"verified_fuzzy":7},"total_outbound_references":68},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-06T06:34:29.942622+00:00","source":"crossref"},{"observed_at":"2026-08-06T06:34:23.284952+00:00","source":"retraction_watch"}],"thesis":"As of 6 August 2026, this Paper Citation Record lists 68 of 68 outbound references and 1 inbound Pith citation observation for arXiv:2604.20975."}