{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:BNCVIQLGYW7HIRPWNT7E2E3TEY","short_pith_number":"pith:BNCVIQLG","schema_version":"1.0","canonical_sha256":"0b45544166c5be7445f66cfe4d1373260ddb5746a708fd0d2bb6c96583d7602c","source":{"kind":"arxiv","id":"1209.3269","version":1},"attestation_state":"computed","paper":{"title":"A Broad Iron Line in LMC X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Andrew C. Fabian, James F. Steiner, Jeffrey E. McClintock, Jeremy S. Sanders, Laura W. Brenneman, Lijun Gou, Ronald A. Remillard, Rubens C. Reis, Ryan Cooke","submitted_at":"2012-09-14T18:02:15Z","abstract_excerpt":"We present results from a deep Suzaku observation of the black hole in LMC X-1, supplemented by coincident monitoring with RXTE. We identify broad relativistic reflection features in a soft disc-dominated spectrum. A strong and variable power-law component of emission is present which we use to demonstrate that enhanced Comptonisation strengthens disc reflection. We constrain the spin parameter of the black hole by modelling LMC X-1's broad reflection features. For our primary and most comprehensive spectral model, we obtain a high value for the spin: a* = 0.97(+0.01,-0.13) (68 per cent confid"},"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":"1209.3269","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-14T18:02:15Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"9030a708b3836785427759734f9c059dcbfb8aac017c8b2ca206eec1e4777811","abstract_canon_sha256":"b704837036176bf60fed8ae4cf9eb052788e455cc560bb1330da5d81702f47f8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:28.922781Z","signature_b64":"l0qUKHJJZbKmmkIRk5dgCyRMYg24JlJ1LflyO7XuoS4eBIwFjI3Jb1EOl7GbzmgSpb5QVwIdyYqE+amjXdmRCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b45544166c5be7445f66cfe4d1373260ddb5746a708fd0d2bb6c96583d7602c","last_reissued_at":"2026-05-18T01:54:28.922250Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:28.922250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Broad Iron Line in LMC X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Andrew C. Fabian, James F. Steiner, Jeffrey E. McClintock, Jeremy S. Sanders, Laura W. Brenneman, Lijun Gou, Ronald A. Remillard, Rubens C. Reis, Ryan Cooke","submitted_at":"2012-09-14T18:02:15Z","abstract_excerpt":"We present results from a deep Suzaku observation of the black hole in LMC X-1, supplemented by coincident monitoring with RXTE. We identify broad relativistic reflection features in a soft disc-dominated spectrum. A strong and variable power-law component of emission is present which we use to demonstrate that enhanced Comptonisation strengthens disc reflection. We constrain the spin parameter of the black hole by modelling LMC X-1's broad reflection features. For our primary and most comprehensive spectral model, we obtain a high value for the spin: a* = 0.97(+0.01,-0.13) (68 per cent confid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3269","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":"1209.3269","created_at":"2026-05-18T01:54:28.922323+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.3269v1","created_at":"2026-05-18T01:54:28.922323+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3269","created_at":"2026-05-18T01:54:28.922323+00:00"},{"alias_kind":"pith_short_12","alias_value":"BNCVIQLGYW7H","created_at":"2026-05-18T12:27:01.376967+00:00"},{"alias_kind":"pith_short_16","alias_value":"BNCVIQLGYW7HIRPW","created_at":"2026-05-18T12:27:01.376967+00:00"},{"alias_kind":"pith_short_8","alias_value":"BNCVIQLG","created_at":"2026-05-18T12:27:01.376967+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/BNCVIQLGYW7HIRPWNT7E2E3TEY","json":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY.json","graph_json":"https://pith.science/api/pith-number/BNCVIQLGYW7HIRPWNT7E2E3TEY/graph.json","events_json":"https://pith.science/api/pith-number/BNCVIQLGYW7HIRPWNT7E2E3TEY/events.json","paper":"https://pith.science/paper/BNCVIQLG"},"agent_actions":{"view_html":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY","download_json":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY.json","view_paper":"https://pith.science/paper/BNCVIQLG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.3269&json=true","fetch_graph":"https://pith.science/api/pith-number/BNCVIQLGYW7HIRPWNT7E2E3TEY/graph.json","fetch_events":"https://pith.science/api/pith-number/BNCVIQLGYW7HIRPWNT7E2E3TEY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY/action/storage_attestation","attest_author":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY/action/author_attestation","sign_citation":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY/action/citation_signature","submit_replication":"https://pith.science/pith/BNCVIQLGYW7HIRPWNT7E2E3TEY/action/replication_record"}},"created_at":"2026-05-18T01:54:28.922323+00:00","updated_at":"2026-05-18T01:54:28.922323+00:00"}