{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:VDHOBHHPQFXIQVMDFM7KALOMT5","short_pith_number":"pith:VDHOBHHP","schema_version":"1.0","canonical_sha256":"a8cee09cef816e8855832b3ea02dcc9f72fff8d7513b3ba3519fdc87a7bd3915","source":{"kind":"arxiv","id":"1607.07125","version":1},"attestation_state":"computed","paper":{"title":"No Signatures of Black-Hole Spin in the X-ray Spectrum of the Seyfert 1 Galaxy Fairall 9","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Alexis Scholtes, Malachi M. Tatum, Max Trevor, Tahir Yaqoob, Tracey Jane Turner","submitted_at":"2016-07-25T01:29:58Z","abstract_excerpt":"Fairall 9 is one of several type 1 active galactic nuclei for which it has been claimed that the angular momentum (or spin) of the supermassive black hole can be robustly measured, using the Fe K$\\alpha$ emission line and Compton-reflection continuum in the X-ray spectrum. The method rests upon the interpretation of the Fe K$\\alpha$ line profile and associated Compton-reflection continuum in terms of relativistic broadening in the strong gravity regime in the innermost regions of an accretion disc, within a few gravitational radii of the black hole. Here, we re-examine a Suzaku X-ray spectrum "},"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":"1607.07125","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-25T01:29:58Z","cross_cats_sorted":[],"title_canon_sha256":"d72a50c738d24f3e6d917f73ea8c46a2f080ba5bad00c9a3af569abff214aaf9","abstract_canon_sha256":"3385b0fa9f62ce0379cccf7a9a1599d4c6974fe1c47ad98bbf2b554c92be4781"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:18.018165Z","signature_b64":"5g0vWtubcVysfbN/GaWPz1Kw+dZW4pXtAgTIhppbD4qlVxG9rCP6Z91T3Dg+x7s5rmlLEoi22KcqY7MqtDAcCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8cee09cef816e8855832b3ea02dcc9f72fff8d7513b3ba3519fdc87a7bd3915","last_reissued_at":"2026-05-18T01:04:18.017784Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:18.017784Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"No Signatures of Black-Hole Spin in the X-ray Spectrum of the Seyfert 1 Galaxy Fairall 9","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Alexis Scholtes, Malachi M. Tatum, Max Trevor, Tahir Yaqoob, Tracey Jane Turner","submitted_at":"2016-07-25T01:29:58Z","abstract_excerpt":"Fairall 9 is one of several type 1 active galactic nuclei for which it has been claimed that the angular momentum (or spin) of the supermassive black hole can be robustly measured, using the Fe K$\\alpha$ emission line and Compton-reflection continuum in the X-ray spectrum. The method rests upon the interpretation of the Fe K$\\alpha$ line profile and associated Compton-reflection continuum in terms of relativistic broadening in the strong gravity regime in the innermost regions of an accretion disc, within a few gravitational radii of the black hole. Here, we re-examine a Suzaku X-ray spectrum "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.07125","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":"1607.07125","created_at":"2026-05-18T01:04:18.017842+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.07125v1","created_at":"2026-05-18T01:04:18.017842+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.07125","created_at":"2026-05-18T01:04:18.017842+00:00"},{"alias_kind":"pith_short_12","alias_value":"VDHOBHHPQFXI","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_16","alias_value":"VDHOBHHPQFXIQVMD","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_8","alias_value":"VDHOBHHP","created_at":"2026-05-18T12:30:48.956258+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2606.27195","citing_title":"HALO II: Constraining Hubble constant $H_{0}$ through continuum delay fitting of Fairall 9","ref_index":83,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5","json":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5.json","graph_json":"https://pith.science/api/pith-number/VDHOBHHPQFXIQVMDFM7KALOMT5/graph.json","events_json":"https://pith.science/api/pith-number/VDHOBHHPQFXIQVMDFM7KALOMT5/events.json","paper":"https://pith.science/paper/VDHOBHHP"},"agent_actions":{"view_html":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5","download_json":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5.json","view_paper":"https://pith.science/paper/VDHOBHHP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.07125&json=true","fetch_graph":"https://pith.science/api/pith-number/VDHOBHHPQFXIQVMDFM7KALOMT5/graph.json","fetch_events":"https://pith.science/api/pith-number/VDHOBHHPQFXIQVMDFM7KALOMT5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5/action/storage_attestation","attest_author":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5/action/author_attestation","sign_citation":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5/action/citation_signature","submit_replication":"https://pith.science/pith/VDHOBHHPQFXIQVMDFM7KALOMT5/action/replication_record"}},"created_at":"2026-05-18T01:04:18.017842+00:00","updated_at":"2026-05-18T01:04:18.017842+00:00"}