{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:CSA7BJQKNXCXRTKCOSG7ZRPAKY","short_pith_number":"pith:CSA7BJQK","canonical_record":{"source":{"id":"0808.3026","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-22T03:11:29Z","cross_cats_sorted":[],"title_canon_sha256":"f026071a3a372f2c79211d0042afcf2be20e72be09eb8a5f766bf8eca678ca9f","abstract_canon_sha256":"77d8ec42614a8d45febd72977cc4d7079b0dccc417877e709709132878d2dd7d"},"schema_version":"1.0"},"canonical_sha256":"1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e","source":{"kind":"arxiv","id":"0808.3026","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.3026","created_at":"2026-05-18T04:36:50Z"},{"alias_kind":"arxiv_version","alias_value":"0808.3026v1","created_at":"2026-05-18T04:36:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.3026","created_at":"2026-05-18T04:36:50Z"},{"alias_kind":"pith_short_12","alias_value":"CSA7BJQKNXCX","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"CSA7BJQKNXCXRTKC","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"CSA7BJQK","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:CSA7BJQKNXCXRTKCOSG7ZRPAKY","target":"record","payload":{"canonical_record":{"source":{"id":"0808.3026","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-22T03:11:29Z","cross_cats_sorted":[],"title_canon_sha256":"f026071a3a372f2c79211d0042afcf2be20e72be09eb8a5f766bf8eca678ca9f","abstract_canon_sha256":"77d8ec42614a8d45febd72977cc4d7079b0dccc417877e709709132878d2dd7d"},"schema_version":"1.0"},"canonical_sha256":"1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:36:50.513481Z","signature_b64":"0SfX1cegxRqW6+3efPH/1McC5FwlXBd2kUZfAtgHviHvx+oQxHaG8PTmLOBVn8wX6WsdFEAzUoTB+ZAZhiUhDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e","last_reissued_at":"2026-05-18T04:36:50.513055Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:36:50.513055Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0808.3026","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":"2026-05-18T04:36:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gkerpeRWQ/6VYyUJUeJ/mIINL0/DLwNNw4Yiwl6bdoHj3wSn+2kV9RATzO0FxyauLUBUYLeG3OwmnjAu41ICAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T20:26:50.413357Z"},"content_sha256":"965eeda17c6c59d876e6a5937d0e07bf87cb7cfc8f76db52ac05dfa3d8e48b34","schema_version":"1.0","event_id":"sha256:965eeda17c6c59d876e6a5937d0e07bf87cb7cfc8f76db52ac05dfa3d8e48b34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:CSA7BJQKNXCXRTKCOSG7ZRPAKY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Difference in Narrow Emission Line Spectra of Seyfert 1 and 2 galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Honglin Lu, Kai Zhang, Tinggui Wang, Xiaobo Dong","submitted_at":"2008-08-22T03:11:29Z","abstract_excerpt":"In the unification scheme of Seyfert galaxies, a dusty torus blocks the continuum source and broad line region in Seyfert 2 galaxies. However it is not clear whether or not and to what extent the torus affects the narrow line spectra. In this paper, we show that Seyfert 1 and Seyfert 2 galaxies have different distributions on the [OIII]/H$\\beta $ vs [NII]/H$\\alpha$ diagram (BPT diagram) for narrow lines. Seyfert 2 galaxies display a clear left boundary on the BPT diagram and only 7.3% of them lie on the left. By contrast, Seyfert 1 galaxies do not show such a cutoff and 33.0% of them stand on "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.3026","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":""},"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":"2026-05-18T04:36:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QOr9O1YNS6wPwAp/ojAL3msokZiaq0I5bsA5t9xVqZWgaM3ZNPFo34Q1thIwbMO1OYO4w3fm08QvvQS20xXiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T20:26:50.413711Z"},"content_sha256":"06e1db8985513c573ca9390c199b820d9ded27568703a56455587ff1de6366eb","schema_version":"1.0","event_id":"sha256:06e1db8985513c573ca9390c199b820d9ded27568703a56455587ff1de6366eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY/bundle.json","state_url":"https://pith.science/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY/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":"2026-06-28T20:26:50Z","links":{"resolver":"https://pith.science/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY","bundle":"https://pith.science/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY/bundle.json","state":"https://pith.science/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CSA7BJQKNXCXRTKCOSG7ZRPAKY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:CSA7BJQKNXCXRTKCOSG7ZRPAKY","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":"77d8ec42614a8d45febd72977cc4d7079b0dccc417877e709709132878d2dd7d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-22T03:11:29Z","title_canon_sha256":"f026071a3a372f2c79211d0042afcf2be20e72be09eb8a5f766bf8eca678ca9f"},"schema_version":"1.0","source":{"id":"0808.3026","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.3026","created_at":"2026-05-18T04:36:50Z"},{"alias_kind":"arxiv_version","alias_value":"0808.3026v1","created_at":"2026-05-18T04:36:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.3026","created_at":"2026-05-18T04:36:50Z"},{"alias_kind":"pith_short_12","alias_value":"CSA7BJQKNXCX","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"CSA7BJQKNXCXRTKC","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"CSA7BJQK","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:06e1db8985513c573ca9390c199b820d9ded27568703a56455587ff1de6366eb","target":"graph","created_at":"2026-05-18T04:36:50Z","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":"In the unification scheme of Seyfert galaxies, a dusty torus blocks the continuum source and broad line region in Seyfert 2 galaxies. However it is not clear whether or not and to what extent the torus affects the narrow line spectra. In this paper, we show that Seyfert 1 and Seyfert 2 galaxies have different distributions on the [OIII]/H$\\beta $ vs [NII]/H$\\alpha$ diagram (BPT diagram) for narrow lines. Seyfert 2 galaxies display a clear left boundary on the BPT diagram and only 7.3% of them lie on the left. By contrast, Seyfert 1 galaxies do not show such a cutoff and 33.0% of them stand on ","authors_text":"Honglin Lu, Kai Zhang, Tinggui Wang, Xiaobo Dong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-22T03:11:29Z","title":"Difference in Narrow Emission Line Spectra of Seyfert 1 and 2 galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.3026","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":"sha256:965eeda17c6c59d876e6a5937d0e07bf87cb7cfc8f76db52ac05dfa3d8e48b34","target":"record","created_at":"2026-05-18T04:36:50Z","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":"77d8ec42614a8d45febd72977cc4d7079b0dccc417877e709709132878d2dd7d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-22T03:11:29Z","title_canon_sha256":"f026071a3a372f2c79211d0042afcf2be20e72be09eb8a5f766bf8eca678ca9f"},"schema_version":"1.0","source":{"id":"0808.3026","kind":"arxiv","version":1}},"canonical_sha256":"1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e","first_computed_at":"2026-05-18T04:36:50.513055Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:36:50.513055Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0SfX1cegxRqW6+3efPH/1McC5FwlXBd2kUZfAtgHviHvx+oQxHaG8PTmLOBVn8wX6WsdFEAzUoTB+ZAZhiUhDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:36:50.513481Z","signed_message":"canonical_sha256_bytes"},"source_id":"0808.3026","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:965eeda17c6c59d876e6a5937d0e07bf87cb7cfc8f76db52ac05dfa3d8e48b34","sha256:06e1db8985513c573ca9390c199b820d9ded27568703a56455587ff1de6366eb"],"state_sha256":"c88a72f2b5b54a40a2262bb486a976b1acbaaa0d90878d445da536b25e1d4f03"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+nOdoBx2xkzFhkBRhKzJKIvxyUgVD+om5D4CPJsrew7Ik1uds2POeDAzN1eAV4ASQ/4qRpFh1FEAxRmy0PzADA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T20:26:50.415512Z","bundle_sha256":"7dcb2f8eea994e9e2be9d021f0b2bdcdabbc2b079facf66897d20657c4ce5b55"}}