{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TUYUDW4SJTB2DVH7QE7XQLMCBW","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":"3438f7461d331cebd179d661706d88f8431cefc1e91b7eef9b0eb5f698c02fab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-18T18:00:00Z","title_canon_sha256":"a7604deeea01a94f262c4b35fd014741b55f12bb9a2aeaf45742ae6c4b0f80ce"},"schema_version":"1.0","source":{"id":"1707.05782","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.05782","created_at":"2026-05-18T00:36:02Z"},{"alias_kind":"arxiv_version","alias_value":"1707.05782v2","created_at":"2026-05-18T00:36:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.05782","created_at":"2026-05-18T00:36:02Z"},{"alias_kind":"pith_short_12","alias_value":"TUYUDW4SJTB2","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TUYUDW4SJTB2DVH7","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TUYUDW4S","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:f97029ea9e5c9ff0922b5e75b17b6ec1af2d35a0a438a3b2a204fbea43902f7f","target":"graph","created_at":"2026-05-18T00:36:02Z","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":"X-ray spectral timing analysis is presented of XMM-Newton observations of the narrow line Seyfert 1 galaxy I Zwicky 1 (I Zw 1) taken in 2015 January. After exploring the effect of background flaring on timing analyses, X-ray time lags between the reflection-dominated 0.3-1.0keV energy and continuum-dominated 1.0-4.0keV band are measured, indicative of reverberation off the inner accretion disc. The reverberation lag time is seen to vary as a step function in frequency; across lower frequency components of the variability, 3e-4 to 1.2e-3Hz a lag of 160s is measured, but the lag shortens to (59 ","authors_text":"C.V. Silva, D.R. Wilkins, E. Costantini, G.A. Kriss, L.C. Gallo, W.N. Brandt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-18T18:00:00Z","title":"Revealing structure and evolution within the corona of the Seyfert galaxy I Zw 1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.05782","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:bb26c486de6d69f0a40f65763061de56c82ecdcea6343d69f7700ed20cdde861","target":"record","created_at":"2026-05-18T00:36:02Z","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":"3438f7461d331cebd179d661706d88f8431cefc1e91b7eef9b0eb5f698c02fab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-18T18:00:00Z","title_canon_sha256":"a7604deeea01a94f262c4b35fd014741b55f12bb9a2aeaf45742ae6c4b0f80ce"},"schema_version":"1.0","source":{"id":"1707.05782","kind":"arxiv","version":2}},"canonical_sha256":"9d3141db924cc3a1d4ff813f782d820dad48e4103d89b6571a48052c768d7d28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d3141db924cc3a1d4ff813f782d820dad48e4103d89b6571a48052c768d7d28","first_computed_at":"2026-05-18T00:36:02.951474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:02.951474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"V9IjWl9vRtp1HRVWZC6jDt7hgpvL3f/eF+BentXfFC5MPQEDYy43W6cyZ8J+A0+u/mfzjkIqTcf4bza12lOpDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:02.951914Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.05782","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb26c486de6d69f0a40f65763061de56c82ecdcea6343d69f7700ed20cdde861","sha256:f97029ea9e5c9ff0922b5e75b17b6ec1af2d35a0a438a3b2a204fbea43902f7f"],"state_sha256":"f09dc668eb8dacc4b708921f7535c26fff530f7663e784b81e6d0076f1c03b27"}