{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:6WUZ5QDVLU645KKIZXE5QJK3VC","short_pith_number":"pith:6WUZ5QDV","canonical_record":{"source":{"id":"astro-ph/9809327","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-25T10:15:20Z","cross_cats_sorted":[],"title_canon_sha256":"ebf51937d729c51ebf0cfebc3e7540e5b273a1f02385e8e278c94661ea9cc1a0","abstract_canon_sha256":"afac5e7e23c9af125c48bd16c97360e08aa5a403949b383c080c212a297ec2f5"},"schema_version":"1.0"},"canonical_sha256":"f5a99ec0755d3dcea948cdc9d8255ba88797656f3eb23fac0805fece92f34075","source":{"kind":"arxiv","id":"astro-ph/9809327","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9809327","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9809327v1","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9809327","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"6WUZ5QDVLU64","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_16","alias_value":"6WUZ5QDVLU645KKI","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_8","alias_value":"6WUZ5QDV","created_at":"2026-07-04T14:16:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:6WUZ5QDVLU645KKIZXE5QJK3VC","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9809327","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-25T10:15:20Z","cross_cats_sorted":[],"title_canon_sha256":"ebf51937d729c51ebf0cfebc3e7540e5b273a1f02385e8e278c94661ea9cc1a0","abstract_canon_sha256":"afac5e7e23c9af125c48bd16c97360e08aa5a403949b383c080c212a297ec2f5"},"schema_version":"1.0"},"canonical_sha256":"f5a99ec0755d3dcea948cdc9d8255ba88797656f3eb23fac0805fece92f34075","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:16:03.354430Z","signature_b64":"lJ4vGiUhiIGQl4CdSGxrzYv0drjARUUaV15PowoRSiwXUIQscXvgOuigwILTMmnrQ9Jc9QYNw6yCbNZqKJSRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5a99ec0755d3dcea948cdc9d8255ba88797656f3eb23fac0805fece92f34075","last_reissued_at":"2026-07-04T14:16:03.353988Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:16:03.353988Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9809327","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":"2026-07-04T14:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lAGoukX0u6E/fs1oFRW+ABqMmf4Jdp0MzAjrHxPb4SbbnXgmwL8xRnVgaIme/RJMJXPUOL12kwdxMhU/4tmGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T10:03:09.876174Z"},"content_sha256":"72331a30882b1d19dc180879d2eae6ae99a082ea1f762a13ce08fa94ca5ab4e5","schema_version":"1.0","event_id":"sha256:72331a30882b1d19dc180879d2eae6ae99a082ea1f762a13ce08fa94ca5ab4e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:6WUZ5QDVLU645KKIZXE5QJK3VC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"BeppoSAX Observations of Bright Seyfert 2 Galaxies: Measuring the Intrinsic Continuum Emission","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.Comastri, A.Fabian, A.Santangelo, Bologna), D.Dal Fiume, F.Frontera, F.Haardt, G.Di Cocco, G.G.C.Palumbo, G.Ghisellini, G.Malaguti (ITeSRE-CNR), G.Matt, L. Bassani (ITeSRE-CNR, L.Piro, M.Cappi (ITeSRE-CNR), M.Dadina, M.Guainazzi, M.Trifoglio, N.Zhang, P.Blanco, P.Grandi, R.Maiolino, T.Maccacaro","submitted_at":"1998-09-25T10:15:20Z","abstract_excerpt":"We report broad band (0.1-200 keV) X-ray observations, made by BeppoSAX, of a sample of bright Seyfert 2 galaxies: NGC7172, NGC2110, NGC4507, Mkn 3 and NGC7674. These spectra provide a better understanding of the effects of X-ray reprocessing by cold material in the source and allow to put tighter constraints on the various spectral parameters involved. In particular, the data are used to determine, with less ambiguities than in the past, the shape of the intrinsic continuum emission by means of the high energy data. Within the small sample both Compton thin and Compton thick sources are found"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9809327","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/9809327/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":"2026-07-04T14:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UghSpZPLx/oopqMBAcIi16OYIuewUMLa70rd2ecCCdJlzmJDrRmWMxC9khn2+zMa2CYmx1sTVCxzNLMzM4V2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T10:03:09.876759Z"},"content_sha256":"0abcd9035567e948e04d0051e430f31ec543a3926a3dbb45178d7231712ae45b","schema_version":"1.0","event_id":"sha256:0abcd9035567e948e04d0051e430f31ec543a3926a3dbb45178d7231712ae45b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6WUZ5QDVLU645KKIZXE5QJK3VC/bundle.json","state_url":"https://pith.science/pith/6WUZ5QDVLU645KKIZXE5QJK3VC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6WUZ5QDVLU645KKIZXE5QJK3VC/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":"2026-08-01T10:03:09Z","links":{"resolver":"https://pith.science/pith/6WUZ5QDVLU645KKIZXE5QJK3VC","bundle":"https://pith.science/pith/6WUZ5QDVLU645KKIZXE5QJK3VC/bundle.json","state":"https://pith.science/pith/6WUZ5QDVLU645KKIZXE5QJK3VC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6WUZ5QDVLU645KKIZXE5QJK3VC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:6WUZ5QDVLU645KKIZXE5QJK3VC","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":"afac5e7e23c9af125c48bd16c97360e08aa5a403949b383c080c212a297ec2f5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-25T10:15:20Z","title_canon_sha256":"ebf51937d729c51ebf0cfebc3e7540e5b273a1f02385e8e278c94661ea9cc1a0"},"schema_version":"1.0","source":{"id":"astro-ph/9809327","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9809327","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9809327v1","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9809327","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"6WUZ5QDVLU64","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_16","alias_value":"6WUZ5QDVLU645KKI","created_at":"2026-07-04T14:16:03Z"},{"alias_kind":"pith_short_8","alias_value":"6WUZ5QDV","created_at":"2026-07-04T14:16:03Z"}],"graph_snapshots":[{"event_id":"sha256:0abcd9035567e948e04d0051e430f31ec543a3926a3dbb45178d7231712ae45b","target":"graph","created_at":"2026-07-04T14:16:03Z","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/9809327/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report broad band (0.1-200 keV) X-ray observations, made by BeppoSAX, of a sample of bright Seyfert 2 galaxies: NGC7172, NGC2110, NGC4507, Mkn 3 and NGC7674. These spectra provide a better understanding of the effects of X-ray reprocessing by cold material in the source and allow to put tighter constraints on the various spectral parameters involved. In particular, the data are used to determine, with less ambiguities than in the past, the shape of the intrinsic continuum emission by means of the high energy data. Within the small sample both Compton thin and Compton thick sources are found","authors_text":"A.Comastri, A.Fabian, A.Santangelo, Bologna), D.Dal Fiume, F.Frontera, F.Haardt, G.Di Cocco, G.G.C.Palumbo, G.Ghisellini, G.Malaguti (ITeSRE-CNR), G.Matt, L. Bassani (ITeSRE-CNR, L.Piro, M.Cappi (ITeSRE-CNR), M.Dadina, M.Guainazzi, M.Trifoglio, N.Zhang, P.Blanco, P.Grandi, R.Maiolino, T.Maccacaro","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-09-25T10:15:20Z","title":"BeppoSAX Observations of Bright Seyfert 2 Galaxies: Measuring the Intrinsic Continuum Emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9809327","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":"sha256:72331a30882b1d19dc180879d2eae6ae99a082ea1f762a13ce08fa94ca5ab4e5","target":"record","created_at":"2026-07-04T14:16:03Z","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":"afac5e7e23c9af125c48bd16c97360e08aa5a403949b383c080c212a297ec2f5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-09-25T10:15:20Z","title_canon_sha256":"ebf51937d729c51ebf0cfebc3e7540e5b273a1f02385e8e278c94661ea9cc1a0"},"schema_version":"1.0","source":{"id":"astro-ph/9809327","kind":"arxiv","version":1}},"canonical_sha256":"f5a99ec0755d3dcea948cdc9d8255ba88797656f3eb23fac0805fece92f34075","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5a99ec0755d3dcea948cdc9d8255ba88797656f3eb23fac0805fece92f34075","first_computed_at":"2026-07-04T14:16:03.353988Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:16:03.353988Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lJ4vGiUhiIGQl4CdSGxrzYv0drjARUUaV15PowoRSiwXUIQscXvgOuigwILTMmnrQ9Jc9QYNw6yCbNZqKJSRCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:16:03.354430Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9809327","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72331a30882b1d19dc180879d2eae6ae99a082ea1f762a13ce08fa94ca5ab4e5","sha256:0abcd9035567e948e04d0051e430f31ec543a3926a3dbb45178d7231712ae45b"],"state_sha256":"488d1b1655e1eb2d0bb7fa7a09cdbe26b0b44bb00ea2da4a2ea4f6513f2074f4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YpnK+E7HU/UDwH8SEgaijHt0ksZfDB592kKjRhbfURf4jc/Mu8YPrsDkd2WWgRG8NXiDy9OAdTVws+sTXVgHBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T10:03:09.880451Z","bundle_sha256":"1ac3d7fd8f8425225bffdcb2f781f90b0574f1986d13680756698a3cc1326001"}}