{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:XNFTQR2ABBRK45NBYBTU2ZRL7L","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":"b847349c82cd32e852942b8e1aa2fb659150db51cdfac09509f7fc95950c76ce","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-03T02:07:31Z","title_canon_sha256":"18e48b56f5637825ab672672f3d426f21ff2cc8d26567d545bec4d26b671bc1f"},"schema_version":"1.0","source":{"id":"astro-ph/0412075","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0412075","created_at":"2026-07-04T16:45:20Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0412075v1","created_at":"2026-07-04T16:45:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0412075","created_at":"2026-07-04T16:45:20Z"},{"alias_kind":"pith_short_12","alias_value":"XNFTQR2ABBRK","created_at":"2026-07-04T16:45:20Z"},{"alias_kind":"pith_short_16","alias_value":"XNFTQR2ABBRK45NB","created_at":"2026-07-04T16:45:20Z"},{"alias_kind":"pith_short_8","alias_value":"XNFTQR2A","created_at":"2026-07-04T16:45:20Z"}],"graph_snapshots":[{"event_id":"sha256:89632c32a05cc841d342f100ff7b477650550f5be6341613319923d827113ebd","target":"graph","created_at":"2026-07-04T16:45:20Z","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/0412075/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We assemble a sample consisting of 66 active galactic nuclei (AGNs) from literature and the {\\em XMM-Newton} archive in order to investigate the origin of the 6.4 keV narrow iron K$\\alpha$ line (NIKAL). The X-ray Baldwin effect of the NIKAL is confirmed in this sample. We find the equivalent width ($EW$) of the NIKAL is more strongly inversely correlated with Eddington ratio ($\\ce$) than the 2-10 keV X-ray luminosity. Our sample favors the origin from the dusty torus and the X-ray Baldwin effect is caused by the changing opening angle of the dusty torus. The relation $EW-\\ce$ can be derived fr","authors_text":"Beijing), Beijing) & Jian-Min Wang (IHEP, Xin-Lin Zhou (IHEP","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-12-03T02:07:31Z","title":"Narrow Iron K$\\alpha$ Lines in Active Galactic Nuclei: Evolving Populations?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412075","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":"sha256:0003e231fa5f72ada8503056fb32d567c4bba37313962218dd24d509dc619b56","target":"record","created_at":"2026-07-04T16:45:20Z","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":"b847349c82cd32e852942b8e1aa2fb659150db51cdfac09509f7fc95950c76ce","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-03T02:07:31Z","title_canon_sha256":"18e48b56f5637825ab672672f3d426f21ff2cc8d26567d545bec4d26b671bc1f"},"schema_version":"1.0","source":{"id":"astro-ph/0412075","kind":"arxiv","version":1}},"canonical_sha256":"bb4b3847400862ae75a1c0674d662bfaecff48e19fd52d5298843c491a47cf1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb4b3847400862ae75a1c0674d662bfaecff48e19fd52d5298843c491a47cf1b","first_computed_at":"2026-07-04T16:45:20.822970Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:45:20.822970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QyBeCi/o7IBChC4x1wraiLhzdnadEcwytq5Ytttt0neCm/kINrbMrm9/bJ72Z8R9Xr8yrEJeWp6ZD6QIbpOuCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:45:20.823338Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0412075","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0003e231fa5f72ada8503056fb32d567c4bba37313962218dd24d509dc619b56","sha256:89632c32a05cc841d342f100ff7b477650550f5be6341613319923d827113ebd"],"state_sha256":"d92e0de9d10608a34ecd60654f9f0d3740a5127d74b151e29abce760f79832ee"}