{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:7N4DO2YZJSBUR34YLTEXLT3LGS","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":"2f6392011db393b2cd62c46af7ddbad20b601d10c7f50e5ab952054f803606ce","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-02T16:20:38Z","title_canon_sha256":"62fc7b9cd17714883f7dcb250a903146e45c12e8221e08b21e8aa3f098a47ed8"},"schema_version":"1.0","source":{"id":"astro-ph/0002054","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0002054","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0002054v1","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0002054","created_at":"2026-05-18T01:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"7N4DO2YZJSBU","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"7N4DO2YZJSBUR34Y","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"7N4DO2YZ","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:48fe40dfb7668145177eae18b0d1c88ede6ec08286094e897678dff4c543661e","target":"graph","created_at":"2026-05-18T01:07:46Z","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"},"paper":{"abstract_excerpt":"We present a deep ASCA observation of a Broad\n Absorption Line Quasar (BALQSO) PG0946+301. The source was clearly detected in one of the gas imaging spectrometers, but not in any other detector. If BALQSOs have intrinsic X-ray spectra similar to normal radio-quiet quasars, our observations imply that there is Thomson thick X-ray absorption (N_H >~10^{24} cm^{-2}) toward\n PG0946+301. This is the largest column density estimated so far toward a BALQSO. The absorber must be at least partially ionized and may be responsible for attenuation in the optical and UV. If the\n Thomson optical depth towar","authors_text":"B. M. Peterson, D. C. Hines, F. Hamann, I. Shlosman, J. Shields, K. Korista, M. Brotherton, M. Crenshaw, M. deKool, M. Elvis, M. Voit, N. Arav, P. J. Green, R. W. Goodrich, S. Mathur, V. Kashyap, W. van Breugel","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-02-02T16:20:38Z","title":"Thomson Thick X-ray Absorption in a Broad Absorption Line Quasar PG0946+301"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0002054","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:a819529f6a7396da4f68b82aff75d6fa1a97c3a7ac84ea861da66f1f0b07375b","target":"record","created_at":"2026-05-18T01:07:46Z","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":"2f6392011db393b2cd62c46af7ddbad20b601d10c7f50e5ab952054f803606ce","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-02T16:20:38Z","title_canon_sha256":"62fc7b9cd17714883f7dcb250a903146e45c12e8221e08b21e8aa3f098a47ed8"},"schema_version":"1.0","source":{"id":"astro-ph/0002054","kind":"arxiv","version":1}},"canonical_sha256":"fb78376b194c8348ef985cc975cf6b34ac76b04134fbec82b1f6cb90ad3063e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb78376b194c8348ef985cc975cf6b34ac76b04134fbec82b1f6cb90ad3063e7","first_computed_at":"2026-05-18T01:07:46.901867Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:46.901867Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jfbkdCUalpbSQtXSYPHrGYIxNUp9rlqU5iJ9TBABwpQqEbWM42BGZ4sykqEykNwTnfhoKjxIU4Dvyi6Up28ZBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:46.902328Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0002054","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a819529f6a7396da4f68b82aff75d6fa1a97c3a7ac84ea861da66f1f0b07375b","sha256:48fe40dfb7668145177eae18b0d1c88ede6ec08286094e897678dff4c543661e"],"state_sha256":"98bc9afad5bb65ba4d4c18259e7cb74a784d19583b601ac64172bad270aa3774"}