{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HNZNITIDKBLJ2RUM6SMA4CE37G","short_pith_number":"pith:HNZNITID","canonical_record":{"source":{"id":"1908.11418","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-29T18:41:11Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c2140cc2070e6268c6baf3cdb654fe5b01187207c15e8517c8e2eca42890793f","abstract_canon_sha256":"22f56e5e2400a9302e36281fdc834ceda81e0aef7f8ff6a32d153af51bbd4cb7"},"schema_version":"1.0"},"canonical_sha256":"3b72d44d0350569d468cf4980e089bf9ae0f40f19434a50c154a327abfe32eaa","source":{"kind":"arxiv","id":"1908.11418","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.11418","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"arxiv_version","alias_value":"1908.11418v2","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.11418","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"pith_short_12","alias_value":"HNZNITIDKBLJ","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"pith_short_16","alias_value":"HNZNITIDKBLJ2RUM","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"pith_short_8","alias_value":"HNZNITID","created_at":"2026-07-05T00:34:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HNZNITIDKBLJ2RUM6SMA4CE37G","target":"record","payload":{"canonical_record":{"source":{"id":"1908.11418","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-29T18:41:11Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c2140cc2070e6268c6baf3cdb654fe5b01187207c15e8517c8e2eca42890793f","abstract_canon_sha256":"22f56e5e2400a9302e36281fdc834ceda81e0aef7f8ff6a32d153af51bbd4cb7"},"schema_version":"1.0"},"canonical_sha256":"3b72d44d0350569d468cf4980e089bf9ae0f40f19434a50c154a327abfe32eaa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:34:17.179861Z","signature_b64":"zP2/liGzxL4deYk5P+Ni7c/7yL7yulUmiKbpTUaGdjm0NmhP68wK4BYhU9R5m/2EUSCvjz9X8okcep815UtFAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b72d44d0350569d468cf4980e089bf9ae0f40f19434a50c154a327abfe32eaa","last_reissued_at":"2026-07-05T00:34:17.179389Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:34:17.179389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.11418","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:34:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KDHfI2s1dFcicG1rVUDqbnuyRqt3D4jqaN4PoI23DwvduWBStZfAHb43mUA1TilBqVU5et/yseDXBD5+QAzOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T06:48:43.304313Z"},"content_sha256":"d39efdaf5da2b0c089b1a2adfd263f0b7eb79099cc26032f16923d2be47dff6d","schema_version":"1.0","event_id":"sha256:d39efdaf5da2b0c089b1a2adfd263f0b7eb79099cc26032f16923d2be47dff6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HNZNITIDKBLJ2RUM6SMA4CE37G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"kiloHertz gravitational waves from binary neutron star remnants: time-domain model and constraints on extreme matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Albino Perego, Alessandro Nagar, David Radice, Francesco Zappa, Matteo Breschi, Michalis Agathos, Sebastiano Bernuzzi","submitted_at":"2019-08-29T18:41:11Z","abstract_excerpt":"The remnant star of a neutron star merger is an anticipated loud source of kiloHertz gravitational waves that conveys unique information on the equation of state of hot matter at extreme densities. Observations of such signals are hampered by the photon shot noise of ground-based interferometers and pose a challenge for gravitational-wave astronomy. We develop an analytical time-domain waveform model for postmerger signals informed by numerical relativity simulations. The model completes effective-one-body waveforms for quasi-circular nonspinning binaries in the kiloHertz regime. We show that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.11418","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.11418/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:34:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AZgFUgXdAiuaIA/NDwE5LI57fN22zTtbVTwGSALTf1Rdi+qsd20awsfKGakSbcQG0SP/h/ei2prFKNbMTt8YDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T06:48:43.305302Z"},"content_sha256":"d321674e3453750c07dca9925f5b7f5a6dd4d1fad2e68848464278aa813808fb","schema_version":"1.0","event_id":"sha256:d321674e3453750c07dca9925f5b7f5a6dd4d1fad2e68848464278aa813808fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HNZNITIDKBLJ2RUM6SMA4CE37G/bundle.json","state_url":"https://pith.science/pith/HNZNITIDKBLJ2RUM6SMA4CE37G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HNZNITIDKBLJ2RUM6SMA4CE37G/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-06T06:48:43Z","links":{"resolver":"https://pith.science/pith/HNZNITIDKBLJ2RUM6SMA4CE37G","bundle":"https://pith.science/pith/HNZNITIDKBLJ2RUM6SMA4CE37G/bundle.json","state":"https://pith.science/pith/HNZNITIDKBLJ2RUM6SMA4CE37G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HNZNITIDKBLJ2RUM6SMA4CE37G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HNZNITIDKBLJ2RUM6SMA4CE37G","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"22f56e5e2400a9302e36281fdc834ceda81e0aef7f8ff6a32d153af51bbd4cb7","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-29T18:41:11Z","title_canon_sha256":"c2140cc2070e6268c6baf3cdb654fe5b01187207c15e8517c8e2eca42890793f"},"schema_version":"1.0","source":{"id":"1908.11418","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.11418","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"arxiv_version","alias_value":"1908.11418v2","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.11418","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"pith_short_12","alias_value":"HNZNITIDKBLJ","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"pith_short_16","alias_value":"HNZNITIDKBLJ2RUM","created_at":"2026-07-05T00:34:17Z"},{"alias_kind":"pith_short_8","alias_value":"HNZNITID","created_at":"2026-07-05T00:34:17Z"}],"graph_snapshots":[{"event_id":"sha256:d321674e3453750c07dca9925f5b7f5a6dd4d1fad2e68848464278aa813808fb","target":"graph","created_at":"2026-07-05T00:34:17Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1908.11418/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The remnant star of a neutron star merger is an anticipated loud source of kiloHertz gravitational waves that conveys unique information on the equation of state of hot matter at extreme densities. Observations of such signals are hampered by the photon shot noise of ground-based interferometers and pose a challenge for gravitational-wave astronomy. We develop an analytical time-domain waveform model for postmerger signals informed by numerical relativity simulations. The model completes effective-one-body waveforms for quasi-circular nonspinning binaries in the kiloHertz regime. We show that ","authors_text":"Albino Perego, Alessandro Nagar, David Radice, Francesco Zappa, Matteo Breschi, Michalis Agathos, Sebastiano Bernuzzi","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-29T18:41:11Z","title":"kiloHertz gravitational waves from binary neutron star remnants: time-domain model and constraints on extreme matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.11418","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d39efdaf5da2b0c089b1a2adfd263f0b7eb79099cc26032f16923d2be47dff6d","target":"record","created_at":"2026-07-05T00:34:17Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"22f56e5e2400a9302e36281fdc834ceda81e0aef7f8ff6a32d153af51bbd4cb7","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-29T18:41:11Z","title_canon_sha256":"c2140cc2070e6268c6baf3cdb654fe5b01187207c15e8517c8e2eca42890793f"},"schema_version":"1.0","source":{"id":"1908.11418","kind":"arxiv","version":2}},"canonical_sha256":"3b72d44d0350569d468cf4980e089bf9ae0f40f19434a50c154a327abfe32eaa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b72d44d0350569d468cf4980e089bf9ae0f40f19434a50c154a327abfe32eaa","first_computed_at":"2026-07-05T00:34:17.179389Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:34:17.179389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zP2/liGzxL4deYk5P+Ni7c/7yL7yulUmiKbpTUaGdjm0NmhP68wK4BYhU9R5m/2EUSCvjz9X8okcep815UtFAg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:34:17.179861Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.11418","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d39efdaf5da2b0c089b1a2adfd263f0b7eb79099cc26032f16923d2be47dff6d","sha256:d321674e3453750c07dca9925f5b7f5a6dd4d1fad2e68848464278aa813808fb"],"state_sha256":"59193a6f3c1d07cd7de7e6fd4facdcc170e0d0e6e1b9e771f9897b44556a24cd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CIitJdoUjCNsqcnf2DYoISHn3RJnzaj8yneHL8GZJA++xXJ/53VqpNJs2lYj0+xY7/ZWMTnxkskT5xNklK9LDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T06:48:43.313375Z","bundle_sha256":"60d925933fca6a82dc1c35b559f43c21a07b1c4101b5bc9e7b5aaf8b7c3b3b34"}}