{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:FY4FNVTKWJO6MDRIJ3TCTVH4MO","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":"a64b35a152a68a68a60bb4a484eb8e40b36ea5b1f16209a58c68e1fb698ce01b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-10-01T18:16:51Z","title_canon_sha256":"4a9bdac1e67950c23d8ef2657a713bd5e5d61d071d3db0917ed2e9369e925682"},"schema_version":"1.0","source":{"id":"astro-ph/9810018","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9810018","created_at":"2026-07-04T14:16:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9810018v1","created_at":"2026-07-04T14:16:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9810018","created_at":"2026-07-04T14:16:04Z"},{"alias_kind":"pith_short_12","alias_value":"FY4FNVTKWJO6","created_at":"2026-07-04T14:16:04Z"},{"alias_kind":"pith_short_16","alias_value":"FY4FNVTKWJO6MDRI","created_at":"2026-07-04T14:16:04Z"},{"alias_kind":"pith_short_8","alias_value":"FY4FNVTK","created_at":"2026-07-04T14:16:04Z"}],"graph_snapshots":[{"event_id":"sha256:849d0591e23b40984228e26398c5298935446a02f0dd7215932a95e89a813e78","target":"graph","created_at":"2026-07-04T14:16:04Z","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/9810018/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Any cold, optically-thick matter in the vicinity of an accreting black hole, such as the accretion disk, can intercept and reprocess some fraction of the hard X-ray continuum emission, thereby imprinting atomic features into the observed spectrum. This process of `X-ray reflection' primarily gives rise to a broad reflection `hump' peaking at 30keV and an iron emission line at 6.4keV. In this review, I briefly describe the physics of this process before reviewing the observations of these features in active galactic nuclei (AGN) and Galactic black hole candidates (GBHCs). In some AGN, Seyfert g","authors_text":"Boulder, C.S.Reynolds (JILA, USA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-10-01T18:16:51Z","title":"Compton reflection and iron fluorescence in AGN and GBHCs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9810018","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":"sha256:3618b6c9f52014a35b52e80113983467b5d05b1bf50c6b31fdbb100aa0d2bd04","target":"record","created_at":"2026-07-04T14:16:04Z","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":"a64b35a152a68a68a60bb4a484eb8e40b36ea5b1f16209a58c68e1fb698ce01b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-10-01T18:16:51Z","title_canon_sha256":"4a9bdac1e67950c23d8ef2657a713bd5e5d61d071d3db0917ed2e9369e925682"},"schema_version":"1.0","source":{"id":"astro-ph/9810018","kind":"arxiv","version":1}},"canonical_sha256":"2e3856d66ab25de60e284ee629d4fc63b0aa4c3c2f4410618563d5f7565452c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e3856d66ab25de60e284ee629d4fc63b0aa4c3c2f4410618563d5f7565452c4","first_computed_at":"2026-07-04T14:16:04.401658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:16:04.401658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VhlpbmiCSahDdoXCkLW2523h608LGWleZvlNDhXij47o9EsGrCuE3P6B1ias0+7b/TXMyrfTSSGQOkUWH6QYDg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:16:04.402078Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9810018","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3618b6c9f52014a35b52e80113983467b5d05b1bf50c6b31fdbb100aa0d2bd04","sha256:849d0591e23b40984228e26398c5298935446a02f0dd7215932a95e89a813e78"],"state_sha256":"3e1e8aadf567d8ac387337ea7dd797bea18a7798dc32da65cbabcff5943ebce7"}