{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:KWRYPILFZRDIEDL3DXJQIFVTAQ","short_pith_number":"pith:KWRYPILF","schema_version":"1.0","canonical_sha256":"55a387a165cc46820d7b1dd30416b30427ab49fa70a2b92dcc83e897b5bd0d5a","source":{"kind":"arxiv","id":"0910.3694","version":1},"attestation_state":"computed","paper":{"title":"A new evolutionary scenario for the formation of massive black-hole binaries such as M33 X-7 and IC 10 X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"M. Cantiello, N. Langer, O.R. Pols, S.-Ch Yoon, S.E. de Mink","submitted_at":"2009-10-20T08:07:45Z","abstract_excerpt":"The formation of close massive black-hole binaries is a challenge for binary evolutionary models, especially the intriguing system M33 X-7 which harbours one of the most massive stellar-mass black holes (16 solar masses) orbiting a 70 solar mass O-star every 3.5 days. In standard binary evolution theory an episode of mass transfer or common envelope is inevitable in a binary with such a small orbital period, which complicates the formation of a black hole with such a high mass.\n  To explain this system, we discuss a new binary evolution channel (De Mink et al. 2009), in which rotational mixing"},"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":"0910.3694","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-10-20T08:07:45Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"ec0b7754d56bc366af4443b5260ed20d9678562434e661aacf64997c49ecd597","abstract_canon_sha256":"965982a4864190b64b21828c60e1c6fa83866f7d63078fa81906909b2819e4da"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:54:45.020531Z","signature_b64":"jRm+Kw7nFwnNtDVs9UpHfkV/DUFTruUlsFJinNpQzY0P5sJHat8kCYCM1VOroa1Rw8JHkebEwJHQYK/kuUZwDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55a387a165cc46820d7b1dd30416b30427ab49fa70a2b92dcc83e897b5bd0d5a","last_reissued_at":"2026-07-04T15:54:45.020116Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:54:45.020116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A new evolutionary scenario for the formation of massive black-hole binaries such as M33 X-7 and IC 10 X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"M. Cantiello, N. Langer, O.R. Pols, S.-Ch Yoon, S.E. de Mink","submitted_at":"2009-10-20T08:07:45Z","abstract_excerpt":"The formation of close massive black-hole binaries is a challenge for binary evolutionary models, especially the intriguing system M33 X-7 which harbours one of the most massive stellar-mass black holes (16 solar masses) orbiting a 70 solar mass O-star every 3.5 days. In standard binary evolution theory an episode of mass transfer or common envelope is inevitable in a binary with such a small orbital period, which complicates the formation of a black hole with such a high mass.\n  To explain this system, we discuss a new binary evolution channel (De Mink et al. 2009), in which rotational mixing"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.3694","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/0910.3694/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":"0910.3694","created_at":"2026-07-04T15:54:45.020178+00:00"},{"alias_kind":"arxiv_version","alias_value":"0910.3694v1","created_at":"2026-07-04T15:54:45.020178+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.3694","created_at":"2026-07-04T15:54:45.020178+00:00"},{"alias_kind":"pith_short_12","alias_value":"KWRYPILFZRDI","created_at":"2026-07-04T15:54:45.020178+00:00"},{"alias_kind":"pith_short_16","alias_value":"KWRYPILFZRDIEDL3","created_at":"2026-07-04T15:54:45.020178+00:00"},{"alias_kind":"pith_short_8","alias_value":"KWRYPILF","created_at":"2026-07-04T15:54:45.020178+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/KWRYPILFZRDIEDL3DXJQIFVTAQ","json":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ.json","graph_json":"https://pith.science/api/pith-number/KWRYPILFZRDIEDL3DXJQIFVTAQ/graph.json","events_json":"https://pith.science/api/pith-number/KWRYPILFZRDIEDL3DXJQIFVTAQ/events.json","paper":"https://pith.science/paper/KWRYPILF"},"agent_actions":{"view_html":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ","download_json":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ.json","view_paper":"https://pith.science/paper/KWRYPILF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0910.3694&json=true","fetch_graph":"https://pith.science/api/pith-number/KWRYPILFZRDIEDL3DXJQIFVTAQ/graph.json","fetch_events":"https://pith.science/api/pith-number/KWRYPILFZRDIEDL3DXJQIFVTAQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ/action/storage_attestation","attest_author":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ/action/author_attestation","sign_citation":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ/action/citation_signature","submit_replication":"https://pith.science/pith/KWRYPILFZRDIEDL3DXJQIFVTAQ/action/replication_record"}},"created_at":"2026-07-04T15:54:45.020178+00:00","updated_at":"2026-07-04T15:54:45.020178+00:00"}