{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:2ZP2QQANEL3MFFJWO6BMPZL325","short_pith_number":"pith:2ZP2QQAN","schema_version":"1.0","canonical_sha256":"d65fa8400d22f6c295367782c7e57bd7676c2e811492843d32f7dd1871b51d0e","source":{"kind":"arxiv","id":"1802.05738","version":1},"attestation_state":"computed","paper":{"title":"The spin of the second-born black hole in coalescing binary black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.SR","authors_text":"G. Meynet, H.F. Song, J. Andrews, M. S{\\o}rensen, T. Fragos, Y. Qin","submitted_at":"2018-02-15T20:03:27Z","abstract_excerpt":"Various binary black hole formation channels have been proposed since the first gravitational event GW150914 was discovered by the Advanced Laser Interferometer Gravitational-Wave Observatory (AdLIGO). For all evolutionary channels based on the evolution of isolated binaries, the immediate progenitor of the binary black hole is a close binary system composed of a black hole and a helium star. We perform detailed binary evolution and systematically explore the parameter space of initial binary properties, including initial black hole and helium star masses, initial rotation of the helium star a"},"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":"1802.05738","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-15T20:03:27Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"8714a888c743a9cb4d4ec97913e4f8d52965ee10351294c20d3791df8ca0d6b3","abstract_canon_sha256":"bfd740c5b6d5359332a64c49d94aa898170a0f7887be38eb988858539ed13135"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:10.265454Z","signature_b64":"lZdRslzraOKyWAf09HARgyhfxQp0Alt4A6FeK9uGFyOvjagOO/Etni7dKZB/+H5iTd0lUnYvmMe7wwq97hZHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d65fa8400d22f6c295367782c7e57bd7676c2e811492843d32f7dd1871b51d0e","last_reissued_at":"2026-05-18T00:08:10.265091Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:10.265091Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The spin of the second-born black hole in coalescing binary black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.SR","authors_text":"G. Meynet, H.F. Song, J. Andrews, M. S{\\o}rensen, T. Fragos, Y. Qin","submitted_at":"2018-02-15T20:03:27Z","abstract_excerpt":"Various binary black hole formation channels have been proposed since the first gravitational event GW150914 was discovered by the Advanced Laser Interferometer Gravitational-Wave Observatory (AdLIGO). For all evolutionary channels based on the evolution of isolated binaries, the immediate progenitor of the binary black hole is a close binary system composed of a black hole and a helium star. We perform detailed binary evolution and systematically explore the parameter space of initial binary properties, including initial black hole and helium star masses, initial rotation of the helium star a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.05738","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":"1802.05738","created_at":"2026-05-18T00:08:10.265147+00:00"},{"alias_kind":"arxiv_version","alias_value":"1802.05738v1","created_at":"2026-05-18T00:08:10.265147+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.05738","created_at":"2026-05-18T00:08:10.265147+00:00"},{"alias_kind":"pith_short_12","alias_value":"2ZP2QQANEL3M","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"2ZP2QQANEL3MFFJW","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"2ZP2QQAN","created_at":"2026-05-18T12:32:02.567920+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":10,"internal_anchor_count":6,"sample":[{"citing_arxiv_id":"2605.21580","citing_title":"Massquerade: Impacts of Mass Ratio Reversals on Binary Black Hole Merger Rates and Mass Distributions","ref_index":93,"is_internal_anchor":true},{"citing_arxiv_id":"2507.23663","citing_title":"Disentangling spinning and nonspinning binary black hole populations with spin sorting","ref_index":15,"is_internal_anchor":true},{"citing_arxiv_id":"2510.06741","citing_title":"Diagnosing the Properties and Evolutionary Fates of Black Hole and Wolf-Rayet X-ray Binaries as Potential Gravitational Wave Sources for the LIGO-Virgo-KAGRA Network","ref_index":21,"is_internal_anchor":true},{"citing_arxiv_id":"2601.09678","citing_title":"The impact of waveform systematics and Gaussian noise on the interpretation of GW231123","ref_index":10,"is_internal_anchor":true},{"citing_arxiv_id":"2108.01045","citing_title":"GWTC-2.1: Deep Extended Catalog of Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run","ref_index":248,"is_internal_anchor":true},{"citing_arxiv_id":"2507.08219","citing_title":"GW231123: a Binary Black Hole Merger with Total Mass 190-265 $M_{\\odot}$","ref_index":292,"is_internal_anchor":true},{"citing_arxiv_id":"2604.02413","citing_title":"The Black Hole Mass Gap as a New Probe of Millicharged Particles","ref_index":48,"is_internal_anchor":false},{"citing_arxiv_id":"2111.03606","citing_title":"GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run","ref_index":62,"is_internal_anchor":false},{"citing_arxiv_id":"2604.06090","citing_title":"Posterior Predictive Checks for Gravitational-wave Populations: Limitations and Improvements","ref_index":68,"is_internal_anchor":false},{"citing_arxiv_id":"2601.07908","citing_title":"Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset","ref_index":65,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325","json":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325.json","graph_json":"https://pith.science/api/pith-number/2ZP2QQANEL3MFFJWO6BMPZL325/graph.json","events_json":"https://pith.science/api/pith-number/2ZP2QQANEL3MFFJWO6BMPZL325/events.json","paper":"https://pith.science/paper/2ZP2QQAN"},"agent_actions":{"view_html":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325","download_json":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325.json","view_paper":"https://pith.science/paper/2ZP2QQAN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1802.05738&json=true","fetch_graph":"https://pith.science/api/pith-number/2ZP2QQANEL3MFFJWO6BMPZL325/graph.json","fetch_events":"https://pith.science/api/pith-number/2ZP2QQANEL3MFFJWO6BMPZL325/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325/action/storage_attestation","attest_author":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325/action/author_attestation","sign_citation":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325/action/citation_signature","submit_replication":"https://pith.science/pith/2ZP2QQANEL3MFFJWO6BMPZL325/action/replication_record"}},"created_at":"2026-05-18T00:08:10.265147+00:00","updated_at":"2026-05-18T00:08:10.265147+00:00"}