{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:QKH2QWI35WGWAWD2EP4U2H7GH7","short_pith_number":"pith:QKH2QWI3","canonical_record":{"source":{"id":"astro-ph/0303143","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-06T18:04:27Z","cross_cats_sorted":[],"title_canon_sha256":"6232307ccba5a54682438108c964b21a1b5cbf231c281a788e07b4b36af4316e","abstract_canon_sha256":"bb7989dbf0781195535bb14c4677cd2d4296a67530f6c1acf9092a495e3406b0"},"schema_version":"1.0"},"canonical_sha256":"828fa8591bed8d60587a23f94d1fe63fe302872a2b2e2129a286871f87fc3b89","source":{"kind":"arxiv","id":"astro-ph/0303143","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0303143","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0303143v1","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0303143","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"pith_short_12","alias_value":"QKH2QWI35WGW","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"pith_short_16","alias_value":"QKH2QWI35WGWAWD2","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"pith_short_8","alias_value":"QKH2QWI3","created_at":"2026-07-04T15:49:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:QKH2QWI35WGWAWD2EP4U2H7GH7","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0303143","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-06T18:04:27Z","cross_cats_sorted":[],"title_canon_sha256":"6232307ccba5a54682438108c964b21a1b5cbf231c281a788e07b4b36af4316e","abstract_canon_sha256":"bb7989dbf0781195535bb14c4677cd2d4296a67530f6c1acf9092a495e3406b0"},"schema_version":"1.0"},"canonical_sha256":"828fa8591bed8d60587a23f94d1fe63fe302872a2b2e2129a286871f87fc3b89","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:49:48.745700Z","signature_b64":"2aq2VbfKoP9yyeVgdJdA6LhlsdymqgEJYjVAPqElaIc8SH0bIIGKjHF3KGSFrjspyuSnhTR74uIk96q/bvOmDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"828fa8591bed8d60587a23f94d1fe63fe302872a2b2e2129a286871f87fc3b89","last_reissued_at":"2026-07-04T15:49:48.745120Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:49:48.745120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0303143","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:49:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WHoilcadFztbMA+wNgZoyp1RxGQApIozeDEkDf5zRW/GWFEfXHhAsaQybBaTCg5YqOY+otygzYPxKDQAuSoGBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T10:36:15.021289Z"},"content_sha256":"0f5365b33ea2c4e47c92e871442ae2ac430df02758c6cc3169679a6ed9ac11cb","schema_version":"1.0","event_id":"sha256:0f5365b33ea2c4e47c92e871442ae2ac430df02758c6cc3169679a6ed9ac11cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:QKH2QWI35WGWAWD2EP4U2H7GH7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Iron K alpha line profiles and the inner boundary condition of accretion flows","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. C. Fabian (IoA, A. Merloni (MPA, Cambridge), Garching)","submitted_at":"2003-03-06T18:04:27Z","abstract_excerpt":"Recent X-ray observations have shown evidence for exceptionally broad and skewed iron K alpha emission lines from several accreting black hole systems. The lines are assumed to be due to fluorescence of the accretion disk illuminated by a surrounding corona and require a steep emissivity profile increasing in to the innermost radius. This appears to question both standard accretion disc theory and the zero torque assumption for the inner boundary condition, both of which predict a much less extreme profile. Instead it argues that a torque may be present due to magnetic coupling with matter in "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0303143","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/astro-ph/0303143/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:49:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LERZ0XYyE7EInZAxSxdZ7h23XNbtqf5HeUV+YcAh93+0+4miBbtckgg7TBjNuMpwPokoI9klfkD96xL4rkbNDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T10:36:15.021901Z"},"content_sha256":"b26295fa47ab30867a8d2960707b3bfe7acc42253e2cbf4ffdf484ba43e2862c","schema_version":"1.0","event_id":"sha256:b26295fa47ab30867a8d2960707b3bfe7acc42253e2cbf4ffdf484ba43e2862c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QKH2QWI35WGWAWD2EP4U2H7GH7/bundle.json","state_url":"https://pith.science/pith/QKH2QWI35WGWAWD2EP4U2H7GH7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QKH2QWI35WGWAWD2EP4U2H7GH7/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T10:36:15Z","links":{"resolver":"https://pith.science/pith/QKH2QWI35WGWAWD2EP4U2H7GH7","bundle":"https://pith.science/pith/QKH2QWI35WGWAWD2EP4U2H7GH7/bundle.json","state":"https://pith.science/pith/QKH2QWI35WGWAWD2EP4U2H7GH7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QKH2QWI35WGWAWD2EP4U2H7GH7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:QKH2QWI35WGWAWD2EP4U2H7GH7","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"bb7989dbf0781195535bb14c4677cd2d4296a67530f6c1acf9092a495e3406b0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-06T18:04:27Z","title_canon_sha256":"6232307ccba5a54682438108c964b21a1b5cbf231c281a788e07b4b36af4316e"},"schema_version":"1.0","source":{"id":"astro-ph/0303143","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0303143","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0303143v1","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0303143","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"pith_short_12","alias_value":"QKH2QWI35WGW","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"pith_short_16","alias_value":"QKH2QWI35WGWAWD2","created_at":"2026-07-04T15:49:48Z"},{"alias_kind":"pith_short_8","alias_value":"QKH2QWI3","created_at":"2026-07-04T15:49:48Z"}],"graph_snapshots":[{"event_id":"sha256:b26295fa47ab30867a8d2960707b3bfe7acc42253e2cbf4ffdf484ba43e2862c","target":"graph","created_at":"2026-07-04T15:49:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0303143/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent X-ray observations have shown evidence for exceptionally broad and skewed iron K alpha emission lines from several accreting black hole systems. The lines are assumed to be due to fluorescence of the accretion disk illuminated by a surrounding corona and require a steep emissivity profile increasing in to the innermost radius. This appears to question both standard accretion disc theory and the zero torque assumption for the inner boundary condition, both of which predict a much less extreme profile. Instead it argues that a torque may be present due to magnetic coupling with matter in ","authors_text":"A. C. Fabian (IoA, A. Merloni (MPA, Cambridge), Garching)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-03-06T18:04:27Z","title":"Iron K alpha line profiles and the inner boundary condition of accretion flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0303143","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:0f5365b33ea2c4e47c92e871442ae2ac430df02758c6cc3169679a6ed9ac11cb","target":"record","created_at":"2026-07-04T15:49:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"bb7989dbf0781195535bb14c4677cd2d4296a67530f6c1acf9092a495e3406b0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-03-06T18:04:27Z","title_canon_sha256":"6232307ccba5a54682438108c964b21a1b5cbf231c281a788e07b4b36af4316e"},"schema_version":"1.0","source":{"id":"astro-ph/0303143","kind":"arxiv","version":1}},"canonical_sha256":"828fa8591bed8d60587a23f94d1fe63fe302872a2b2e2129a286871f87fc3b89","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"828fa8591bed8d60587a23f94d1fe63fe302872a2b2e2129a286871f87fc3b89","first_computed_at":"2026-07-04T15:49:48.745120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:49:48.745120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2aq2VbfKoP9yyeVgdJdA6LhlsdymqgEJYjVAPqElaIc8SH0bIIGKjHF3KGSFrjspyuSnhTR74uIk96q/bvOmDg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:49:48.745700Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0303143","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f5365b33ea2c4e47c92e871442ae2ac430df02758c6cc3169679a6ed9ac11cb","sha256:b26295fa47ab30867a8d2960707b3bfe7acc42253e2cbf4ffdf484ba43e2862c"],"state_sha256":"d5065e18a04b0115abb30c956cc72a018b79c238b36fa79e082dad9a6661bc7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ppSFYUiyvNntAE8plS5y+nUyBpXPpFJXSTVNGHq1pRg9SmyFeEAVbbBPfMgC3f+UrP6dUYOn8+K/EYRf1neuBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T10:36:15.025655Z","bundle_sha256":"f103db9c08ea91a2501031d1c0a69ecb0c0af40fb747e2dd76351b6c62b48c25"}}