{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:NKCGI7UAZFDX6D2ENOEVH7FQ3D","short_pith_number":"pith:NKCGI7UA","schema_version":"1.0","canonical_sha256":"6a84647e80c9477f0f446b8953fcb0d8ed967cc3ce2f6b35687da489bd79ebc7","source":{"kind":"arxiv","id":"1107.5100","version":1},"attestation_state":"computed","paper":{"title":"The Nature and Cause of Spectral Variability in LMC X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"D. M. Smith, J. Swank, L. Ruhlen","submitted_at":"2011-07-26T01:50:53Z","abstract_excerpt":"We present the results of a long-term observation campaign of the extragalactic wind-accreting black-hole X-ray binary LMC X-1, using the Proportional Counter Array on the Rossi X-Ray Timing Explorer (RXTE). The observations show that LMC X-1's accretion disk exhibits an anomalous temperature-luminosity relation. We use deep archival RXTE observations to show that large movements across the temperature-luminosity space occupied by the system can take place on time scales as short as half an hour. These changes cannot be adequately explained by perturbations that propagate from the outer disk o"},"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":"1107.5100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-26T01:50:53Z","cross_cats_sorted":[],"title_canon_sha256":"ef452a63ae72433c884b9f552c30877840e46b81ac69019747f009ee0b7eef42","abstract_canon_sha256":"effcccb97ed25a8ce8168ff995dea1637cedd3b98d08d5d320633a8e07b079de"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:10.047510Z","signature_b64":"ZBH5p1BLBtMzdhJkf2PMMydqGnwfWVoFqyDhDH4M6PYAKCXqmZc36BhisRg+InvnUcstfeYnctvr3ydO9W1yDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a84647e80c9477f0f446b8953fcb0d8ed967cc3ce2f6b35687da489bd79ebc7","last_reissued_at":"2026-05-18T02:01:10.046622Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:10.046622Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Nature and Cause of Spectral Variability in LMC X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"D. M. Smith, J. Swank, L. Ruhlen","submitted_at":"2011-07-26T01:50:53Z","abstract_excerpt":"We present the results of a long-term observation campaign of the extragalactic wind-accreting black-hole X-ray binary LMC X-1, using the Proportional Counter Array on the Rossi X-Ray Timing Explorer (RXTE). The observations show that LMC X-1's accretion disk exhibits an anomalous temperature-luminosity relation. We use deep archival RXTE observations to show that large movements across the temperature-luminosity space occupied by the system can take place on time scales as short as half an hour. These changes cannot be adequately explained by perturbations that propagate from the outer disk o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.5100","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":"1107.5100","created_at":"2026-05-18T02:01:10.046779+00:00"},{"alias_kind":"arxiv_version","alias_value":"1107.5100v1","created_at":"2026-05-18T02:01:10.046779+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.5100","created_at":"2026-05-18T02:01:10.046779+00:00"},{"alias_kind":"pith_short_12","alias_value":"NKCGI7UAZFDX","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_16","alias_value":"NKCGI7UAZFDX6D2E","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_8","alias_value":"NKCGI7UA","created_at":"2026-05-18T12:26:37.096874+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/NKCGI7UAZFDX6D2ENOEVH7FQ3D","json":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D.json","graph_json":"https://pith.science/api/pith-number/NKCGI7UAZFDX6D2ENOEVH7FQ3D/graph.json","events_json":"https://pith.science/api/pith-number/NKCGI7UAZFDX6D2ENOEVH7FQ3D/events.json","paper":"https://pith.science/paper/NKCGI7UA"},"agent_actions":{"view_html":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D","download_json":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D.json","view_paper":"https://pith.science/paper/NKCGI7UA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1107.5100&json=true","fetch_graph":"https://pith.science/api/pith-number/NKCGI7UAZFDX6D2ENOEVH7FQ3D/graph.json","fetch_events":"https://pith.science/api/pith-number/NKCGI7UAZFDX6D2ENOEVH7FQ3D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D/action/storage_attestation","attest_author":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D/action/author_attestation","sign_citation":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D/action/citation_signature","submit_replication":"https://pith.science/pith/NKCGI7UAZFDX6D2ENOEVH7FQ3D/action/replication_record"}},"created_at":"2026-05-18T02:01:10.046779+00:00","updated_at":"2026-05-18T02:01:10.046779+00:00"}