{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:YBDPJV7WB6VIVLISEXMZB54VS5","short_pith_number":"pith:YBDPJV7W","schema_version":"1.0","canonical_sha256":"c046f4d7f60faa8aad1225d990f795976e835fb9010f8a7719522ee19a5dc8af","source":{"kind":"arxiv","id":"1902.07433","version":1},"attestation_state":"computed","paper":{"title":"The rise and fall of a binary AGN candidate: the story of PSO J334.2028+1.4075","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"D. Cseh, E. Kun, Gy. Mez\\H{o}, K.\\'E. Gab\\'anyi, L.I. Gurvits, P. Benke, P. Mohan, S. Frey, T. An, Z. Paragi","submitted_at":"2019-02-20T07:26:58Z","abstract_excerpt":"Apparently periodic optical variations of the luminous high-redshift (z=2.06) quasar PSO J334.2028+1.4075 led Liu et al. (2015) to interpret the variability as the orbital period of a binary supermassive black hole (SMBH) residing in a single circumbinary accretion disk. The proposed orbital separation was around 0.006 pc, and the possible inspiral time about 7 yr in the rest frame of the quasar. Such objects would be of high interest as the difficult-to-find end products of binary SMBH evolution, and potential sources of low-frequency gravitational waves. However, extending the time baseline "},"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":"1902.07433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-20T07:26:58Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"db9617052d055d4a7a806f2b92c31e4337d30602b3ba805d434085b2524d4b95","abstract_canon_sha256":"8a05657b0c7321cd4a7523db2de682a07eefd5f944b2fe61a6bf7676f609129c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:07.901142Z","signature_b64":"cdWWzcmDcXjl6XXkrWeyfU43eAu2u43ShaClRXKS7jCkulDghXYbPziuSiKrmbeiC4AZBLN04zAoWd35xp19DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c046f4d7f60faa8aad1225d990f795976e835fb9010f8a7719522ee19a5dc8af","last_reissued_at":"2026-05-17T23:53:07.900340Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:07.900340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The rise and fall of a binary AGN candidate: the story of PSO J334.2028+1.4075","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"D. Cseh, E. Kun, Gy. Mez\\H{o}, K.\\'E. Gab\\'anyi, L.I. Gurvits, P. Benke, P. Mohan, S. Frey, T. An, Z. Paragi","submitted_at":"2019-02-20T07:26:58Z","abstract_excerpt":"Apparently periodic optical variations of the luminous high-redshift (z=2.06) quasar PSO J334.2028+1.4075 led Liu et al. (2015) to interpret the variability as the orbital period of a binary supermassive black hole (SMBH) residing in a single circumbinary accretion disk. The proposed orbital separation was around 0.006 pc, and the possible inspiral time about 7 yr in the rest frame of the quasar. Such objects would be of high interest as the difficult-to-find end products of binary SMBH evolution, and potential sources of low-frequency gravitational waves. However, extending the time baseline "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.07433","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":"1902.07433","created_at":"2026-05-17T23:53:07.900478+00:00"},{"alias_kind":"arxiv_version","alias_value":"1902.07433v1","created_at":"2026-05-17T23:53:07.900478+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.07433","created_at":"2026-05-17T23:53:07.900478+00:00"},{"alias_kind":"pith_short_12","alias_value":"YBDPJV7WB6VI","created_at":"2026-05-18T12:33:33.725879+00:00"},{"alias_kind":"pith_short_16","alias_value":"YBDPJV7WB6VIVLIS","created_at":"2026-05-18T12:33:33.725879+00:00"},{"alias_kind":"pith_short_8","alias_value":"YBDPJV7W","created_at":"2026-05-18T12:33:33.725879+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/YBDPJV7WB6VIVLISEXMZB54VS5","json":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5.json","graph_json":"https://pith.science/api/pith-number/YBDPJV7WB6VIVLISEXMZB54VS5/graph.json","events_json":"https://pith.science/api/pith-number/YBDPJV7WB6VIVLISEXMZB54VS5/events.json","paper":"https://pith.science/paper/YBDPJV7W"},"agent_actions":{"view_html":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5","download_json":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5.json","view_paper":"https://pith.science/paper/YBDPJV7W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1902.07433&json=true","fetch_graph":"https://pith.science/api/pith-number/YBDPJV7WB6VIVLISEXMZB54VS5/graph.json","fetch_events":"https://pith.science/api/pith-number/YBDPJV7WB6VIVLISEXMZB54VS5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5/action/storage_attestation","attest_author":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5/action/author_attestation","sign_citation":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5/action/citation_signature","submit_replication":"https://pith.science/pith/YBDPJV7WB6VIVLISEXMZB54VS5/action/replication_record"}},"created_at":"2026-05-17T23:53:07.900478+00:00","updated_at":"2026-05-17T23:53:07.900478+00:00"}