{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:HRMXNZKAR6UHT55IJMELXIP65A","short_pith_number":"pith:HRMXNZKA","schema_version":"1.0","canonical_sha256":"3c5976e5408fa879f7a84b08bba1fee8319f37f41c4123dc58158151e2ff3356","source":{"kind":"arxiv","id":"astro-ph/0402677","version":1},"attestation_state":"computed","paper":{"title":"Observational Evidence for Intermediate-Mass Black Holes in Ultra-luminous X-ray Sources","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E. J. M Colbert, M. C. Miller","submitted_at":"2004-02-27T19:52:32Z","abstract_excerpt":"Evidence is mounting that some Ultra-luminous X-ray sources (ULXs) may contain accreting intermediate-mass black holes (IMBHs). We review the current observational evidence for IMBH-ULXs. While low-luminosity ULXs with L_X <~ 10^39.5 erg/s (assuming isotropic emission) are consistent with mildly X-ray beamed high-mass X-ray binaries, there are a considerable number of ULXs with larger X-ray luminosities that are not easily explained by these models. Recent high-S/N XMM X-ray spectra are showing an increasing number of ULXs with ``cool disks'' -- accretion disks with multi-color blackbody inner"},"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":"astro-ph/0402677","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-02-27T19:52:32Z","cross_cats_sorted":[],"title_canon_sha256":"d4abc1b246f155b16f666eb00225e5f24e95ba26ba8096ec0ddba42939763f74","abstract_canon_sha256":"596c5d5f8f9a1fe2c6b7e37620f71cd151eb089b34f309b72a252305af7be233"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:51.073972Z","signature_b64":"MpiuFpNamyQIhwL2xh9FFwIrPD6mOy/jww5f/7nvtNNptyO9jDiNw6eBynHrj7H4iKnXoOxMesJsnPMaUFGkCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3c5976e5408fa879f7a84b08bba1fee8319f37f41c4123dc58158151e2ff3356","last_reissued_at":"2026-05-18T00:59:51.073345Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:51.073345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observational Evidence for Intermediate-Mass Black Holes in Ultra-luminous X-ray Sources","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E. J. M Colbert, M. C. Miller","submitted_at":"2004-02-27T19:52:32Z","abstract_excerpt":"Evidence is mounting that some Ultra-luminous X-ray sources (ULXs) may contain accreting intermediate-mass black holes (IMBHs). We review the current observational evidence for IMBH-ULXs. While low-luminosity ULXs with L_X <~ 10^39.5 erg/s (assuming isotropic emission) are consistent with mildly X-ray beamed high-mass X-ray binaries, there are a considerable number of ULXs with larger X-ray luminosities that are not easily explained by these models. Recent high-S/N XMM X-ray spectra are showing an increasing number of ULXs with ``cool disks'' -- accretion disks with multi-color blackbody inner"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0402677","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":"astro-ph/0402677","created_at":"2026-05-18T00:59:51.073454+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0402677v1","created_at":"2026-05-18T00:59:51.073454+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0402677","created_at":"2026-05-18T00:59:51.073454+00:00"},{"alias_kind":"pith_short_12","alias_value":"HRMXNZKAR6UH","created_at":"2026-05-18T12:25:52.687210+00:00"},{"alias_kind":"pith_short_16","alias_value":"HRMXNZKAR6UHT55I","created_at":"2026-05-18T12:25:52.687210+00:00"},{"alias_kind":"pith_short_8","alias_value":"HRMXNZKA","created_at":"2026-05-18T12:25:52.687210+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/HRMXNZKAR6UHT55IJMELXIP65A","json":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A.json","graph_json":"https://pith.science/api/pith-number/HRMXNZKAR6UHT55IJMELXIP65A/graph.json","events_json":"https://pith.science/api/pith-number/HRMXNZKAR6UHT55IJMELXIP65A/events.json","paper":"https://pith.science/paper/HRMXNZKA"},"agent_actions":{"view_html":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A","download_json":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A.json","view_paper":"https://pith.science/paper/HRMXNZKA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0402677&json=true","fetch_graph":"https://pith.science/api/pith-number/HRMXNZKAR6UHT55IJMELXIP65A/graph.json","fetch_events":"https://pith.science/api/pith-number/HRMXNZKAR6UHT55IJMELXIP65A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A/action/storage_attestation","attest_author":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A/action/author_attestation","sign_citation":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A/action/citation_signature","submit_replication":"https://pith.science/pith/HRMXNZKAR6UHT55IJMELXIP65A/action/replication_record"}},"created_at":"2026-05-18T00:59:51.073454+00:00","updated_at":"2026-05-18T00:59:51.073454+00:00"}