{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:3NDRARPYVORUBERMYW4DPP6535","short_pith_number":"pith:3NDRARPY","schema_version":"1.0","canonical_sha256":"db471045f8aba340922cc5b837bfdddf6a2902eb63764489a90cc6b14145de0d","source":{"kind":"arxiv","id":"2511.13820","version":2},"attestation_state":"computed","paper":{"title":"Hierarchical Black Hole Mergers in Nuclear Star Clusters: A Combined Dynamical-Secular Channel for GW231123-like Events","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Bin Liu, Dieran Wang, Dong Lai","submitted_at":"2025-11-17T19:00:01Z","abstract_excerpt":"The recent binary black hole (BH) merger GW231123, with both components likely in the high-mass gap and with high spins, challenges standard BH binary formation models. It is usually thought that the BHs are of second (or higher) generation (2G), resulting from the mergers of smaller BHs. But the physical processes that produce the merging 2G BH binaries are unclear and highly unconstrained. We show that such 2G mergers can be naturally produced in the nuclear star cluster of Milky Way-like galaxy. The dominant channel combines a sequence of binary-single interactions with secular evolution dr"},"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":"2511.13820","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-11-17T19:00:01Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"4f0a56257313548dcab7d2a283ae8ab236374a896dd195cae6163ac0b532306d","abstract_canon_sha256":"390897c79f642ab79aa5f5bf25e0abca66413d8a8a58456a1bc2df7bb5def09f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-17T01:20:40.280476Z","signature_b64":"pdkBZfFsyaDH2uO5ZVM03U9JdqWwTZ4Fx6CGS2dA6bdd28RPewqzySUT8RDIS/YqCOjQr/A5m1dqWIO0Ja4dAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"db471045f8aba340922cc5b837bfdddf6a2902eb63764489a90cc6b14145de0d","last_reissued_at":"2026-07-17T01:20:40.279502Z","signature_status":"signed_v1","first_computed_at":"2026-07-17T01:20:40.279502Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hierarchical Black Hole Mergers in Nuclear Star Clusters: A Combined Dynamical-Secular Channel for GW231123-like Events","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Bin Liu, Dieran Wang, Dong Lai","submitted_at":"2025-11-17T19:00:01Z","abstract_excerpt":"The recent binary black hole (BH) merger GW231123, with both components likely in the high-mass gap and with high spins, challenges standard BH binary formation models. It is usually thought that the BHs are of second (or higher) generation (2G), resulting from the mergers of smaller BHs. But the physical processes that produce the merging 2G BH binaries are unclear and highly unconstrained. We show that such 2G mergers can be naturally produced in the nuclear star cluster of Milky Way-like galaxy. The dominant channel combines a sequence of binary-single interactions with secular evolution dr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.13820","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/2511.13820/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":"2511.13820","created_at":"2026-07-17T01:20:40.279959+00:00"},{"alias_kind":"arxiv_version","alias_value":"2511.13820v2","created_at":"2026-07-17T01:20:40.279959+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.13820","created_at":"2026-07-17T01:20:40.279959+00:00"},{"alias_kind":"pith_short_12","alias_value":"3NDRARPYVORU","created_at":"2026-07-17T01:20:40.279959+00:00"},{"alias_kind":"pith_short_16","alias_value":"3NDRARPYVORUBERM","created_at":"2026-07-17T01:20:40.279959+00:00"},{"alias_kind":"pith_short_8","alias_value":"3NDRARPY","created_at":"2026-07-17T01:20:40.279959+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":3,"sample":[{"citing_arxiv_id":"2605.11283","citing_title":"Black Hole Binary Detection Landscape for the Laser Interferometer Lunar Antenna (LILA): Signal-to-Noise Calculations & Science Cases","ref_index":173,"is_internal_anchor":true},{"citing_arxiv_id":"2604.05492","citing_title":"Remnant recoil and host environments of GWTC-4.0 binary black-hole mergers","ref_index":79,"is_internal_anchor":true},{"citing_arxiv_id":"2604.15431","citing_title":"Highly eccentric non-spinning binary black hole mergers: quadrupolar post-merger waveforms","ref_index":55,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535","json":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535.json","graph_json":"https://pith.science/api/pith-number/3NDRARPYVORUBERMYW4DPP6535/graph.json","events_json":"https://pith.science/api/pith-number/3NDRARPYVORUBERMYW4DPP6535/events.json","paper":"https://pith.science/paper/3NDRARPY"},"agent_actions":{"view_html":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535","download_json":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535.json","view_paper":"https://pith.science/paper/3NDRARPY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2511.13820&json=true","fetch_graph":"https://pith.science/api/pith-number/3NDRARPYVORUBERMYW4DPP6535/graph.json","fetch_events":"https://pith.science/api/pith-number/3NDRARPYVORUBERMYW4DPP6535/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535/action/storage_attestation","attest_author":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535/action/author_attestation","sign_citation":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535/action/citation_signature","submit_replication":"https://pith.science/pith/3NDRARPYVORUBERMYW4DPP6535/action/replication_record"}},"created_at":"2026-07-17T01:20:40.279959+00:00","updated_at":"2026-07-17T01:20:40.279959+00:00"}