{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:ESTFE7A5JI4IU6NUFQG63S4PYA","short_pith_number":"pith:ESTFE7A5","schema_version":"1.0","canonical_sha256":"24a6527c1d4a388a79b42c0dedcb8fc017e88d234b8c5f32653028a43c3c6163","source":{"kind":"arxiv","id":"1702.05465","version":1},"attestation_state":"computed","paper":{"title":"A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - III. Radial Velocity Variations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alison Pennell, Gavin Mathes, Jessie C. Runnoe, Jia Liu, Jules P. Halpern, Michael Eracleous, Steinn Sigurdsson, Stephanie Brown, Tamara Bogdanovic, Todd Boroson","submitted_at":"2017-02-17T18:11:32Z","abstract_excerpt":"We have been spectroscopically monitoring 88 quasars selected to have broad H$\\beta$ emission lines offset from their systemic redshift by thousands of km s$^{-1}$. By analogy with single-lined spectroscopic binary stars, we consider these quasars to be candidates for hosting supermassive black hole binaries (SBHBs). In this work we present new radial velocity measurements, typically 3-4 per object over a time period of up to 12 years in the observer's frame. In 29/88 of the SBHB candidates no variability of the shape of the broad H$\\beta$ profile is observed, which allows us to make reliable "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1702.05465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-17T18:11:32Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"1914568af1b67cea55b0e1d747ab5ad9466bc67df84bf17bf116cd07b4dd90a4","abstract_canon_sha256":"1d5064b0940930d61126d91025c812b1bff4a45888331d9b05c194f4a22deba8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:12.646196Z","signature_b64":"AFLgXBaJ8uWou18M164F3qyTcmo6ibBB3yJ5FW99iKpj7CZcOgy7sgzvLBAg+ft110s3CVNqoC66PjraIxUVCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24a6527c1d4a388a79b42c0dedcb8fc017e88d234b8c5f32653028a43c3c6163","last_reissued_at":"2026-05-18T00:46:12.645634Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:12.645634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - III. Radial Velocity Variations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alison Pennell, Gavin Mathes, Jessie C. Runnoe, Jia Liu, Jules P. Halpern, Michael Eracleous, Steinn Sigurdsson, Stephanie Brown, Tamara Bogdanovic, Todd Boroson","submitted_at":"2017-02-17T18:11:32Z","abstract_excerpt":"We have been spectroscopically monitoring 88 quasars selected to have broad H$\\beta$ emission lines offset from their systemic redshift by thousands of km s$^{-1}$. By analogy with single-lined spectroscopic binary stars, we consider these quasars to be candidates for hosting supermassive black hole binaries (SBHBs). In this work we present new radial velocity measurements, typically 3-4 per object over a time period of up to 12 years in the observer's frame. In 29/88 of the SBHB candidates no variability of the shape of the broad H$\\beta$ profile is observed, which allows us to make reliable "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.05465","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1702.05465","created_at":"2026-05-18T00:46:12.645732+00:00"},{"alias_kind":"arxiv_version","alias_value":"1702.05465v1","created_at":"2026-05-18T00:46:12.645732+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.05465","created_at":"2026-05-18T00:46:12.645732+00:00"},{"alias_kind":"pith_short_12","alias_value":"ESTFE7A5JI4I","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_16","alias_value":"ESTFE7A5JI4IU6NU","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_8","alias_value":"ESTFE7A5","created_at":"2026-05-18T12:31:12.930513+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA","json":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA.json","graph_json":"https://pith.science/api/pith-number/ESTFE7A5JI4IU6NUFQG63S4PYA/graph.json","events_json":"https://pith.science/api/pith-number/ESTFE7A5JI4IU6NUFQG63S4PYA/events.json","paper":"https://pith.science/paper/ESTFE7A5"},"agent_actions":{"view_html":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA","download_json":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA.json","view_paper":"https://pith.science/paper/ESTFE7A5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1702.05465&json=true","fetch_graph":"https://pith.science/api/pith-number/ESTFE7A5JI4IU6NUFQG63S4PYA/graph.json","fetch_events":"https://pith.science/api/pith-number/ESTFE7A5JI4IU6NUFQG63S4PYA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA/action/storage_attestation","attest_author":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA/action/author_attestation","sign_citation":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA/action/citation_signature","submit_replication":"https://pith.science/pith/ESTFE7A5JI4IU6NUFQG63S4PYA/action/replication_record"}},"created_at":"2026-05-18T00:46:12.645732+00:00","updated_at":"2026-05-18T00:46:12.645732+00:00"}