{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:SQZ7Q373PPN6MI2ZBTLSTLU6FV","short_pith_number":"pith:SQZ7Q373","schema_version":"1.0","canonical_sha256":"9433f86ffb7bdbe623590cd729ae9e2d5b97861ec9467afa075abf6697afd5a9","source":{"kind":"arxiv","id":"2508.13412","version":1},"attestation_state":"computed","paper":{"title":"Prospects for the formation of GW231123 from the AGN channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"B. McKernan, E. McPike, H. E. Cook, J. Postiglione, K. E. S. Ford, K. Nathaniel, R. O'Shaughnessy, S. Ray, V. Delfavero","submitted_at":"2025-08-19T00:09:27Z","abstract_excerpt":"The recent binary black hole (BBH) merger GW231123 consisted of the merger of two intermediate mass black holes (IMBH) which appear to have large spin magnitudes. Active galactic nuclei (AGN) are very promising environments for IMBH mergers and growth due to high escape velocities. Here we demonstrate how GW231123 can be produced in the AGN channel. Using the McFACTS code, we explore the impact of various choices of the black hole (BH) initial mass function (IMF) on predicted mass and spin magnitudes of BBH mergers from the AGN dynamical formation channel. By integrating the likelihood functio"},"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":"2508.13412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-08-19T00:09:27Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"a27a88ea1592d8d9a43246e5ff3cead8a2d3c313acb24aa6d751cccc6ad6ef81","abstract_canon_sha256":"6f90043113b4345103ea173892ce84aa03c1acf6f54e33dc5d695b88a0a65119"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:55:47.704486Z","signature_b64":"62BxoxT4xUqX9tbY4NkmWuUDTnszfWUba5+VCM5fNBISMAfBkHke3aLmUR8F5ChsKFXGmF0+E3Q+sjGtvNuSAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9433f86ffb7bdbe623590cd729ae9e2d5b97861ec9467afa075abf6697afd5a9","last_reissued_at":"2026-07-05T11:55:47.704062Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:55:47.704062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Prospects for the formation of GW231123 from the AGN channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"B. McKernan, E. McPike, H. E. Cook, J. Postiglione, K. E. S. Ford, K. Nathaniel, R. O'Shaughnessy, S. Ray, V. Delfavero","submitted_at":"2025-08-19T00:09:27Z","abstract_excerpt":"The recent binary black hole (BBH) merger GW231123 consisted of the merger of two intermediate mass black holes (IMBH) which appear to have large spin magnitudes. Active galactic nuclei (AGN) are very promising environments for IMBH mergers and growth due to high escape velocities. Here we demonstrate how GW231123 can be produced in the AGN channel. Using the McFACTS code, we explore the impact of various choices of the black hole (BH) initial mass function (IMF) on predicted mass and spin magnitudes of BBH mergers from the AGN dynamical formation channel. By integrating the likelihood functio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.13412","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.13412/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":"2508.13412","created_at":"2026-07-05T11:55:47.704123+00:00"},{"alias_kind":"arxiv_version","alias_value":"2508.13412v1","created_at":"2026-07-05T11:55:47.704123+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.13412","created_at":"2026-07-05T11:55:47.704123+00:00"},{"alias_kind":"pith_short_12","alias_value":"SQZ7Q373PPN6","created_at":"2026-07-05T11:55:47.704123+00:00"},{"alias_kind":"pith_short_16","alias_value":"SQZ7Q373PPN6MI2Z","created_at":"2026-07-05T11:55:47.704123+00:00"},{"alias_kind":"pith_short_8","alias_value":"SQZ7Q373","created_at":"2026-07-05T11:55:47.704123+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":9,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.25304","citing_title":"Constraints on Line-of-Sight Acceleration from O1-O4","ref_index":100,"is_internal_anchor":false},{"citing_arxiv_id":"2606.30144","citing_title":"Joint population and strong-lensing inference for resolved gravitational-wave events probes the black-hole merger rate beyond the peak of star formation","ref_index":136,"is_internal_anchor":false},{"citing_arxiv_id":"2605.25980","citing_title":"Reversible-jump MCMC reveals binary black hole subpopulations with distinct redshift evolution","ref_index":101,"is_internal_anchor":false},{"citing_arxiv_id":"2512.17550","citing_title":"GW231123: Overlapping Gravitational Wave Signals?","ref_index":12,"is_internal_anchor":false},{"citing_arxiv_id":"2512.20060","citing_title":"Measuring Eccentricity and Addressing Waveform Systematics in GW231123","ref_index":14,"is_internal_anchor":false},{"citing_arxiv_id":"2601.09678","citing_title":"The impact of waveform systematics and Gaussian noise on the interpretation of GW231123","ref_index":14,"is_internal_anchor":false},{"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":73,"is_internal_anchor":false},{"citing_arxiv_id":"2604.15431","citing_title":"Highly eccentric non-spinning binary black hole mergers: quadrupolar post-merger waveforms","ref_index":69,"is_internal_anchor":false},{"citing_arxiv_id":"2604.18709","citing_title":"Investigating the formation channel of GW231123: Population III stars or hierarchical mergers?","ref_index":32,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV","json":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV.json","graph_json":"https://pith.science/api/pith-number/SQZ7Q373PPN6MI2ZBTLSTLU6FV/graph.json","events_json":"https://pith.science/api/pith-number/SQZ7Q373PPN6MI2ZBTLSTLU6FV/events.json","paper":"https://pith.science/paper/SQZ7Q373"},"agent_actions":{"view_html":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV","download_json":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV.json","view_paper":"https://pith.science/paper/SQZ7Q373","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2508.13412&json=true","fetch_graph":"https://pith.science/api/pith-number/SQZ7Q373PPN6MI2ZBTLSTLU6FV/graph.json","fetch_events":"https://pith.science/api/pith-number/SQZ7Q373PPN6MI2ZBTLSTLU6FV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV/action/storage_attestation","attest_author":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV/action/author_attestation","sign_citation":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV/action/citation_signature","submit_replication":"https://pith.science/pith/SQZ7Q373PPN6MI2ZBTLSTLU6FV/action/replication_record"}},"created_at":"2026-07-05T11:55:47.704123+00:00","updated_at":"2026-07-05T11:55:47.704123+00:00"}