{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:LFT77TUIQAKVFDALNL42XPIG7A","short_pith_number":"pith:LFT77TUI","schema_version":"1.0","canonical_sha256":"5967ffce888015528c0b6af9abbd06f83beb248967fd720585bb92404f71a649","source":{"kind":"arxiv","id":"2005.11118","version":2},"attestation_state":"computed","paper":{"title":"Supermassive Binary Black Hole Evolution can be traced by a small SKA Pulsar Timing Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Chao-Wei Tsai, Di Li, Yi Feng, Zheng Zheng","submitted_at":"2020-05-22T11:48:49Z","abstract_excerpt":"Supermassive black holes are commonly found in the center of galaxies and evolve with their hosts. The supermassive binary black holes (SMBBH) are thus expected to exist in close galaxy pairs, however, none has been unequivocally detected. The square kilometre array (SKA) is a multi-purpose radio telescope with a collecting area approaching 1 million square metres, with great potential for detecting nanohertz gravitational waves (GWs). In this paper, we quantify the GW detectability by SKA for a realistic SMBBH population using pulsar timing array (PTA) technique and quantify its impact on rev"},"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":"2005.11118","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-22T11:48:49Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"30d37caad2aaa19d635f398f95ab12b448a2e2c1c54fe5cd3ae339fa5457c0eb","abstract_canon_sha256":"40d1b1dbc4f19b5bacfb2af417ae402d7815dfc587492cc5fae08138f0135087"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:19:05.975047Z","signature_b64":"3FCpH06WHX3ZBe5+IEHDlunwb0eNrybieqhtlWiSgwWpKr+xNlQE2Q6jC1g5HSeP8ivdjA8pB3gKxvkyUpwNCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5967ffce888015528c0b6af9abbd06f83beb248967fd720585bb92404f71a649","last_reissued_at":"2026-07-05T01:19:05.974604Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:19:05.974604Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Supermassive Binary Black Hole Evolution can be traced by a small SKA Pulsar Timing Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Chao-Wei Tsai, Di Li, Yi Feng, Zheng Zheng","submitted_at":"2020-05-22T11:48:49Z","abstract_excerpt":"Supermassive black holes are commonly found in the center of galaxies and evolve with their hosts. The supermassive binary black holes (SMBBH) are thus expected to exist in close galaxy pairs, however, none has been unequivocally detected. The square kilometre array (SKA) is a multi-purpose radio telescope with a collecting area approaching 1 million square metres, with great potential for detecting nanohertz gravitational waves (GWs). In this paper, we quantify the GW detectability by SKA for a realistic SMBBH population using pulsar timing array (PTA) technique and quantify its impact on rev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.11118","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/2005.11118/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2005.11118","created_at":"2026-07-05T01:19:05.974677+00:00"},{"alias_kind":"arxiv_version","alias_value":"2005.11118v2","created_at":"2026-07-05T01:19:05.974677+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.11118","created_at":"2026-07-05T01:19:05.974677+00:00"},{"alias_kind":"pith_short_12","alias_value":"LFT77TUIQAKV","created_at":"2026-07-05T01:19:05.974677+00:00"},{"alias_kind":"pith_short_16","alias_value":"LFT77TUIQAKVFDAL","created_at":"2026-07-05T01:19:05.974677+00:00"},{"alias_kind":"pith_short_8","alias_value":"LFT77TUI","created_at":"2026-07-05T01:19:05.974677+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/LFT77TUIQAKVFDALNL42XPIG7A","json":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A.json","graph_json":"https://pith.science/api/pith-number/LFT77TUIQAKVFDALNL42XPIG7A/graph.json","events_json":"https://pith.science/api/pith-number/LFT77TUIQAKVFDALNL42XPIG7A/events.json","paper":"https://pith.science/paper/LFT77TUI"},"agent_actions":{"view_html":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A","download_json":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A.json","view_paper":"https://pith.science/paper/LFT77TUI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2005.11118&json=true","fetch_graph":"https://pith.science/api/pith-number/LFT77TUIQAKVFDALNL42XPIG7A/graph.json","fetch_events":"https://pith.science/api/pith-number/LFT77TUIQAKVFDALNL42XPIG7A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A/action/storage_attestation","attest_author":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A/action/author_attestation","sign_citation":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A/action/citation_signature","submit_replication":"https://pith.science/pith/LFT77TUIQAKVFDALNL42XPIG7A/action/replication_record"}},"created_at":"2026-07-05T01:19:05.974677+00:00","updated_at":"2026-07-05T01:19:05.974677+00:00"}