{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:VPIG667NBXSZUD2H33JXQC63ZF","short_pith_number":"pith:VPIG667N","canonical_record":{"source":{"id":"1104.1348","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-07T14:57:54Z","cross_cats_sorted":[],"title_canon_sha256":"6e45581be6f32530bac3ba36a2d1736814abc0e7bf5d81f718bb3ab864fa7a6a","abstract_canon_sha256":"b682ea66b4f9cf351e4d0f0fb285224b9f40cbed8aa24ac1bcbdbb35393ecb7b"},"schema_version":"1.0"},"canonical_sha256":"abd06f7bed0de59a0f47ded3780bdbc94be78e83dcebfdca5171e82d63c2c85d","source":{"kind":"arxiv","id":"1104.1348","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1348","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1348v1","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1348","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"VPIG667NBXSZ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VPIG667NBXSZUD2H","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VPIG667N","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:VPIG667NBXSZUD2H33JXQC63ZF","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1348","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-07T14:57:54Z","cross_cats_sorted":[],"title_canon_sha256":"6e45581be6f32530bac3ba36a2d1736814abc0e7bf5d81f718bb3ab864fa7a6a","abstract_canon_sha256":"b682ea66b4f9cf351e4d0f0fb285224b9f40cbed8aa24ac1bcbdbb35393ecb7b"},"schema_version":"1.0"},"canonical_sha256":"abd06f7bed0de59a0f47ded3780bdbc94be78e83dcebfdca5171e82d63c2c85d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:36.718830Z","signature_b64":"2H6yOEe+X8DzJISGyOGR1WX3ZbPZfQYoxSCMbxQFL/awTqUNOZX0A7Sg51DkatfbK8tKe52+7D5xqZXW+p4KAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abd06f7bed0de59a0f47ded3780bdbc94be78e83dcebfdca5171e82d63c2c85d","last_reissued_at":"2026-05-18T02:02:36.718101Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:36.718101Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1348","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":"2026-05-18T02:02:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"clBdFmfsDxxQPDksxuHWP/UX+Ixi6oC4/6rdVz7UiKsEmm34qG8fgRT0NMaXRGwOmgG7QET3X+iKd+nuR6tUAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:23:51.105996Z"},"content_sha256":"41a9f1962e68c4e69ddb8a940fd80d6d2e8165ae9568ba668a60fb83518c27df","schema_version":"1.0","event_id":"sha256:41a9f1962e68c4e69ddb8a940fd80d6d2e8165ae9568ba668a60fb83518c27df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:VPIG667NBXSZUD2H33JXQC63ZF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The relationship between [OIII]5007A equivalent width and obscuration in AGN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Caccianiga, P. Severgnini","submitted_at":"2011-04-07T14:57:54Z","abstract_excerpt":"In this paper we study the relationship between the equivalent width (EW) of the [OIII]5007A narrow emission line in AGN and the level of obscuration. To this end, we combine the results of a systematic spectral analysis, both in the optical and in the X-rays, on a statistically complete sample of ~170 X-ray selected AGN from the XMM-Newton Bright Serendipitous Source sample (XBS). We find that the observed large range of [OIII]5007A equivalent widths observed in the sample (from a few A up to 500A) is well explained as a combination of an intrinsic spread, probably due to the large range of c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1348","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":"2026-05-18T02:02:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U6ePwtK0c+/d2QiYPFuNIjErWoiURR0uhV0+8Lg4TG5y+M926rU3irbxzWRGljTMo9+IvZHeyRfm03dnr+ouCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:23:51.106442Z"},"content_sha256":"07ecdf3765f9482a92dd8b945c2ee381e1f6ef396f01750a42c592d722ccffd8","schema_version":"1.0","event_id":"sha256:07ecdf3765f9482a92dd8b945c2ee381e1f6ef396f01750a42c592d722ccffd8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VPIG667NBXSZUD2H33JXQC63ZF/bundle.json","state_url":"https://pith.science/pith/VPIG667NBXSZUD2H33JXQC63ZF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VPIG667NBXSZUD2H33JXQC63ZF/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":"2026-05-28T16:23:51Z","links":{"resolver":"https://pith.science/pith/VPIG667NBXSZUD2H33JXQC63ZF","bundle":"https://pith.science/pith/VPIG667NBXSZUD2H33JXQC63ZF/bundle.json","state":"https://pith.science/pith/VPIG667NBXSZUD2H33JXQC63ZF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VPIG667NBXSZUD2H33JXQC63ZF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:VPIG667NBXSZUD2H33JXQC63ZF","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":"b682ea66b4f9cf351e4d0f0fb285224b9f40cbed8aa24ac1bcbdbb35393ecb7b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-07T14:57:54Z","title_canon_sha256":"6e45581be6f32530bac3ba36a2d1736814abc0e7bf5d81f718bb3ab864fa7a6a"},"schema_version":"1.0","source":{"id":"1104.1348","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1348","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1348v1","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1348","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"VPIG667NBXSZ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VPIG667NBXSZUD2H","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VPIG667N","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:07ecdf3765f9482a92dd8b945c2ee381e1f6ef396f01750a42c592d722ccffd8","target":"graph","created_at":"2026-05-18T02:02:36Z","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 this paper we study the relationship between the equivalent width (EW) of the [OIII]5007A narrow emission line in AGN and the level of obscuration. To this end, we combine the results of a systematic spectral analysis, both in the optical and in the X-rays, on a statistically complete sample of ~170 X-ray selected AGN from the XMM-Newton Bright Serendipitous Source sample (XBS). We find that the observed large range of [OIII]5007A equivalent widths observed in the sample (from a few A up to 500A) is well explained as a combination of an intrinsic spread, probably due to the large range of c","authors_text":"A. Caccianiga, P. Severgnini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-07T14:57:54Z","title":"The relationship between [OIII]5007A equivalent width and obscuration in AGN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1348","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":"sha256:41a9f1962e68c4e69ddb8a940fd80d6d2e8165ae9568ba668a60fb83518c27df","target":"record","created_at":"2026-05-18T02:02:36Z","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":"b682ea66b4f9cf351e4d0f0fb285224b9f40cbed8aa24ac1bcbdbb35393ecb7b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-04-07T14:57:54Z","title_canon_sha256":"6e45581be6f32530bac3ba36a2d1736814abc0e7bf5d81f718bb3ab864fa7a6a"},"schema_version":"1.0","source":{"id":"1104.1348","kind":"arxiv","version":1}},"canonical_sha256":"abd06f7bed0de59a0f47ded3780bdbc94be78e83dcebfdca5171e82d63c2c85d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abd06f7bed0de59a0f47ded3780bdbc94be78e83dcebfdca5171e82d63c2c85d","first_computed_at":"2026-05-18T02:02:36.718101Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:36.718101Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2H6yOEe+X8DzJISGyOGR1WX3ZbPZfQYoxSCMbxQFL/awTqUNOZX0A7Sg51DkatfbK8tKe52+7D5xqZXW+p4KAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:36.718830Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1348","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41a9f1962e68c4e69ddb8a940fd80d6d2e8165ae9568ba668a60fb83518c27df","sha256:07ecdf3765f9482a92dd8b945c2ee381e1f6ef396f01750a42c592d722ccffd8"],"state_sha256":"787bab1146195ffe9dcb74166230f9f5237dd1f0ff9aec89ab3dfea4d89e64b6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gTYGN/rDWtXmrNOG1dhSDZe0z3ufcA/lz79RaT6cwAQ1eYLVeTlCMBArxjYiV3Iek/IX1N40wkkrQbAC5AROCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:23:51.109297Z","bundle_sha256":"72a874e50813f3bbbb7b634f8c06aa94e844bc8e23d81bb377d5c54939ff1e72"}}