{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:DWKJ3EPYEANHCFWU42LVMQY44F","short_pith_number":"pith:DWKJ3EPY","canonical_record":{"source":{"id":"1302.1761","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-07T14:36:01Z","cross_cats_sorted":[],"title_canon_sha256":"c9a1b65fdcd90897173ca6e738661a8d21365fc4ff7a4253eae37b4aa693d563","abstract_canon_sha256":"ddb87ce82ac28828c7d4bf184381503739d9242414dadb5a1cb471489c9adffe"},"schema_version":"1.0"},"canonical_sha256":"1d949d91f8201a7116d4e69756431ce175287f180dfd38d15cc0dc13d1eb3f6c","source":{"kind":"arxiv","id":"1302.1761","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1761","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1761v2","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1761","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"pith_short_12","alias_value":"DWKJ3EPYEANH","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DWKJ3EPYEANHCFWU","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DWKJ3EPY","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:DWKJ3EPYEANHCFWU42LVMQY44F","target":"record","payload":{"canonical_record":{"source":{"id":"1302.1761","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-07T14:36:01Z","cross_cats_sorted":[],"title_canon_sha256":"c9a1b65fdcd90897173ca6e738661a8d21365fc4ff7a4253eae37b4aa693d563","abstract_canon_sha256":"ddb87ce82ac28828c7d4bf184381503739d9242414dadb5a1cb471489c9adffe"},"schema_version":"1.0"},"canonical_sha256":"1d949d91f8201a7116d4e69756431ce175287f180dfd38d15cc0dc13d1eb3f6c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:43.938822Z","signature_b64":"HBzz0hU/MkcFYb11sYsp/Ubtif26zQUOH4t32wd3NFZRcBcLPrEL0RHrSkquXPLJXAIE2EJj2EwgAG1i2d+FBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d949d91f8201a7116d4e69756431ce175287f180dfd38d15cc0dc13d1eb3f6c","last_reissued_at":"2026-05-18T01:51:43.938196Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:43.938196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.1761","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:51:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wi3NHyMkm24SZN3dvMt7LYwYbCMeTJ64XQ5K4M7RfNZ5Ncfw40s2s1LOVd+luh1RivZFcLswxQivk5M3hf8DCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T07:53:11.793396Z"},"content_sha256":"d67ee097f7de3588d91a18d9083f494b9a85fa72f8b0fe223ccde65a9610067f","schema_version":"1.0","event_id":"sha256:d67ee097f7de3588d91a18d9083f494b9a85fa72f8b0fe223ccde65a9610067f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:DWKJ3EPYEANHCFWU42LVMQY44F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of Fe K-alpha X-ray reverberation around the black holes in MCG-5-23-16 and NGC 7314","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. C. Fabian, A. Zoghbi, C. Reynolds, E. Kara, E. M. Cackett, G. Miniutti","submitted_at":"2013-02-07T14:36:01Z","abstract_excerpt":"Several X-ray observations have recently revealed the presence of reverberation time delays between spectral components in AGN. Most of the observed lags are between the power-law Comptonization component, seen directly, and the soft excess produced by reflection in the vicinity of the black hole. NGC 4151 was the first object to show these lags in the iron K band. Here, we report the discovery of reverberation lags in the Fe K band in two other sources: MCG-5-23-16 and NGC 7314. In both objects, the 6-7 keV band, where the Fe K line peaks, lags the bands at lower and higher energies with a ti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1761","kind":"arxiv","version":2},"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":"2026-05-18T01:51:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ElLjijlXdwa8NVO+RJE2qTtTvNFKFXBvaosAmLrfMRarltclPsYH5fD3wv6nZ274KJT3yppUXjXyMsTk3CqmDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T07:53:11.793755Z"},"content_sha256":"22e69109bc750f6d52b9edc4319db056e09746a6b05324378963300e54c62c21","schema_version":"1.0","event_id":"sha256:22e69109bc750f6d52b9edc4319db056e09746a6b05324378963300e54c62c21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DWKJ3EPYEANHCFWU42LVMQY44F/bundle.json","state_url":"https://pith.science/pith/DWKJ3EPYEANHCFWU42LVMQY44F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DWKJ3EPYEANHCFWU42LVMQY44F/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":"2026-05-28T07:53:11Z","links":{"resolver":"https://pith.science/pith/DWKJ3EPYEANHCFWU42LVMQY44F","bundle":"https://pith.science/pith/DWKJ3EPYEANHCFWU42LVMQY44F/bundle.json","state":"https://pith.science/pith/DWKJ3EPYEANHCFWU42LVMQY44F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DWKJ3EPYEANHCFWU42LVMQY44F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DWKJ3EPYEANHCFWU42LVMQY44F","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":"ddb87ce82ac28828c7d4bf184381503739d9242414dadb5a1cb471489c9adffe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-07T14:36:01Z","title_canon_sha256":"c9a1b65fdcd90897173ca6e738661a8d21365fc4ff7a4253eae37b4aa693d563"},"schema_version":"1.0","source":{"id":"1302.1761","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1761","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1761v2","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1761","created_at":"2026-05-18T01:51:43Z"},{"alias_kind":"pith_short_12","alias_value":"DWKJ3EPYEANH","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DWKJ3EPYEANHCFWU","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DWKJ3EPY","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:22e69109bc750f6d52b9edc4319db056e09746a6b05324378963300e54c62c21","target":"graph","created_at":"2026-05-18T01:51:43Z","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":"Several X-ray observations have recently revealed the presence of reverberation time delays between spectral components in AGN. Most of the observed lags are between the power-law Comptonization component, seen directly, and the soft excess produced by reflection in the vicinity of the black hole. NGC 4151 was the first object to show these lags in the iron K band. Here, we report the discovery of reverberation lags in the Fe K band in two other sources: MCG-5-23-16 and NGC 7314. In both objects, the 6-7 keV band, where the Fe K line peaks, lags the bands at lower and higher energies with a ti","authors_text":"A. C. Fabian, A. Zoghbi, C. Reynolds, E. Kara, E. M. Cackett, G. Miniutti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-07T14:36:01Z","title":"Discovery of Fe K-alpha X-ray reverberation around the black holes in MCG-5-23-16 and NGC 7314"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1761","kind":"arxiv","version":2},"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:d67ee097f7de3588d91a18d9083f494b9a85fa72f8b0fe223ccde65a9610067f","target":"record","created_at":"2026-05-18T01:51:43Z","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":"ddb87ce82ac28828c7d4bf184381503739d9242414dadb5a1cb471489c9adffe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-07T14:36:01Z","title_canon_sha256":"c9a1b65fdcd90897173ca6e738661a8d21365fc4ff7a4253eae37b4aa693d563"},"schema_version":"1.0","source":{"id":"1302.1761","kind":"arxiv","version":2}},"canonical_sha256":"1d949d91f8201a7116d4e69756431ce175287f180dfd38d15cc0dc13d1eb3f6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d949d91f8201a7116d4e69756431ce175287f180dfd38d15cc0dc13d1eb3f6c","first_computed_at":"2026-05-18T01:51:43.938196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:43.938196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HBzz0hU/MkcFYb11sYsp/Ubtif26zQUOH4t32wd3NFZRcBcLPrEL0RHrSkquXPLJXAIE2EJj2EwgAG1i2d+FBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:43.938822Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.1761","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d67ee097f7de3588d91a18d9083f494b9a85fa72f8b0fe223ccde65a9610067f","sha256:22e69109bc750f6d52b9edc4319db056e09746a6b05324378963300e54c62c21"],"state_sha256":"9e15391b8af43f8742b602e0a6e7110290f4008d12143b3e0b6613b252028182"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8468693Rlo+8G/KDVEYtTNKgg5oVKbjrb9nH6izMbqHazQzpPv37VDsbkTfzEHzUWoEng1L878tCF3qJBDeJCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T07:53:11.795837Z","bundle_sha256":"47f11c360cb2f752176092e98b032e81ec24cb2c922e500c85735381a56e37ff"}}