{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:WTZNYIZCYMRY7I66KKPREHN7YK","short_pith_number":"pith:WTZNYIZC","canonical_record":{"source":{"id":"1911.09582","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-21T16:20:12Z","cross_cats_sorted":[],"title_canon_sha256":"fd03caccd07387fb37af1c4b0eb80ec22cd6d76d5c16fdbe59136c08a87074cb","abstract_canon_sha256":"e4dee57e50570649f40c609506679900726db7981d382b2733796fcb74452c1a"},"schema_version":"1.0"},"canonical_sha256":"b4f2dc2322c3238fa3de529f121dbfc29476eed1110b477094aa7b9d2f10f58c","source":{"kind":"arxiv","id":"1911.09582","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.09582","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"arxiv_version","alias_value":"1911.09582v1","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.09582","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"pith_short_12","alias_value":"WTZNYIZCYMRY","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"pith_short_16","alias_value":"WTZNYIZCYMRY7I66","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"pith_short_8","alias_value":"WTZNYIZC","created_at":"2026-07-05T00:31:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:WTZNYIZCYMRY7I66KKPREHN7YK","target":"record","payload":{"canonical_record":{"source":{"id":"1911.09582","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-21T16:20:12Z","cross_cats_sorted":[],"title_canon_sha256":"fd03caccd07387fb37af1c4b0eb80ec22cd6d76d5c16fdbe59136c08a87074cb","abstract_canon_sha256":"e4dee57e50570649f40c609506679900726db7981d382b2733796fcb74452c1a"},"schema_version":"1.0"},"canonical_sha256":"b4f2dc2322c3238fa3de529f121dbfc29476eed1110b477094aa7b9d2f10f58c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:31:33.239680Z","signature_b64":"WGA2Aac8lzSm1I7/jynBEKVmGlEOn8gYylpMlscqoc53fjtFXv/8kUBIpAB8iK6MqMAGlcIPymGht2g4qtFRAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4f2dc2322c3238fa3de529f121dbfc29476eed1110b477094aa7b9d2f10f58c","last_reissued_at":"2026-07-05T00:31:33.239261Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:31:33.239261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1911.09582","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":"2026-07-05T00:31:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GgjWv+fsPl9a+P9PqmNrKJMeXlT4O+TpI4n4+cC57UG/lgWWTlqIeFFnST7yuffWKfv89MwUHiKxmzUytaj1Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T05:38:42.316725Z"},"content_sha256":"99be0e5a7187a3d47b4b156c15dd5f02c17675547162866ccbdf13cd9b18f741","schema_version":"1.0","event_id":"sha256:99be0e5a7187a3d47b4b156c15dd5f02c17675547162866ccbdf13cd9b18f741"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:WTZNYIZCYMRY7I66KKPREHN7YK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a soft X-ray lag in the Ultraluminous X-ray Source NGC 1313 X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.C. Fabian, C. Pinto, C.R. Canizares, D. Barret, D.J. Walton, E. Kara, F. Furst, H.P. Earnshaw, L. Tao, M. Bachetti, M. Brightman, M.J. Middleton, N.A. Webb, P. Kosec, R. Soria, T.P. Roberts, W.N. Alston","submitted_at":"2019-11-21T16:20:12Z","abstract_excerpt":"Ultraluminous X-ray Sources (ULXs) provide a unique opportunities to probe the geometry and energetics of super-Eddington accretion. The radiative processes involved in super-Eddington accretion are not well understood, and so studying correlated variability between different energy bands can provide insights into the causal connection between different emitting regions. We present a spectral-timing analysis of NGC 1313 X-1 from a recent XMM-Newton campaign. The spectra can be decomposed into two thermal-like components, the hotter of which may originate from the inner accretion disc, and the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.09582","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/1911.09582/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":"2026-07-05T00:31:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vvlpEC+I0EWPRHJYp0DNkWaCYtYKwxgpAZI25AEfPUEwCKx0XtTod2a8drLAhJJ7vvtbqYvrSlQl6Kt1V+xpCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T05:38:42.317116Z"},"content_sha256":"2b82629a1ab9cfda1e268b93837451d546bf2024981e66aa4fefeda0f068b62f","schema_version":"1.0","event_id":"sha256:2b82629a1ab9cfda1e268b93837451d546bf2024981e66aa4fefeda0f068b62f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WTZNYIZCYMRY7I66KKPREHN7YK/bundle.json","state_url":"https://pith.science/pith/WTZNYIZCYMRY7I66KKPREHN7YK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WTZNYIZCYMRY7I66KKPREHN7YK/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":"2026-08-22T05:38:42Z","links":{"resolver":"https://pith.science/pith/WTZNYIZCYMRY7I66KKPREHN7YK","bundle":"https://pith.science/pith/WTZNYIZCYMRY7I66KKPREHN7YK/bundle.json","state":"https://pith.science/pith/WTZNYIZCYMRY7I66KKPREHN7YK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WTZNYIZCYMRY7I66KKPREHN7YK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WTZNYIZCYMRY7I66KKPREHN7YK","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":"e4dee57e50570649f40c609506679900726db7981d382b2733796fcb74452c1a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-21T16:20:12Z","title_canon_sha256":"fd03caccd07387fb37af1c4b0eb80ec22cd6d76d5c16fdbe59136c08a87074cb"},"schema_version":"1.0","source":{"id":"1911.09582","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.09582","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"arxiv_version","alias_value":"1911.09582v1","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.09582","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"pith_short_12","alias_value":"WTZNYIZCYMRY","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"pith_short_16","alias_value":"WTZNYIZCYMRY7I66","created_at":"2026-07-05T00:31:33Z"},{"alias_kind":"pith_short_8","alias_value":"WTZNYIZC","created_at":"2026-07-05T00:31:33Z"}],"graph_snapshots":[{"event_id":"sha256:2b82629a1ab9cfda1e268b93837451d546bf2024981e66aa4fefeda0f068b62f","target":"graph","created_at":"2026-07-05T00:31:33Z","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/1911.09582/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ultraluminous X-ray Sources (ULXs) provide a unique opportunities to probe the geometry and energetics of super-Eddington accretion. The radiative processes involved in super-Eddington accretion are not well understood, and so studying correlated variability between different energy bands can provide insights into the causal connection between different emitting regions. We present a spectral-timing analysis of NGC 1313 X-1 from a recent XMM-Newton campaign. The spectra can be decomposed into two thermal-like components, the hotter of which may originate from the inner accretion disc, and the ","authors_text":"A.C. Fabian, C. Pinto, C.R. Canizares, D. Barret, D.J. Walton, E. Kara, F. Furst, H.P. Earnshaw, L. Tao, M. Bachetti, M. Brightman, M.J. Middleton, N.A. Webb, P. Kosec, R. Soria, T.P. Roberts, W.N. Alston","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-21T16:20:12Z","title":"Discovery of a soft X-ray lag in the Ultraluminous X-ray Source NGC 1313 X-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.09582","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":"sha256:99be0e5a7187a3d47b4b156c15dd5f02c17675547162866ccbdf13cd9b18f741","target":"record","created_at":"2026-07-05T00:31:33Z","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":"e4dee57e50570649f40c609506679900726db7981d382b2733796fcb74452c1a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-21T16:20:12Z","title_canon_sha256":"fd03caccd07387fb37af1c4b0eb80ec22cd6d76d5c16fdbe59136c08a87074cb"},"schema_version":"1.0","source":{"id":"1911.09582","kind":"arxiv","version":1}},"canonical_sha256":"b4f2dc2322c3238fa3de529f121dbfc29476eed1110b477094aa7b9d2f10f58c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4f2dc2322c3238fa3de529f121dbfc29476eed1110b477094aa7b9d2f10f58c","first_computed_at":"2026-07-05T00:31:33.239261Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:31:33.239261Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WGA2Aac8lzSm1I7/jynBEKVmGlEOn8gYylpMlscqoc53fjtFXv/8kUBIpAB8iK6MqMAGlcIPymGht2g4qtFRAg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:31:33.239680Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.09582","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99be0e5a7187a3d47b4b156c15dd5f02c17675547162866ccbdf13cd9b18f741","sha256:2b82629a1ab9cfda1e268b93837451d546bf2024981e66aa4fefeda0f068b62f"],"state_sha256":"58e9d512e1c21b8660c35a8ee420359e73b05de0ec1ec7e7a4d35f48051ae5c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cz+dLOGiBhi7RoZRl5j5f8jVcDbuPHJy1bZBrUk0EmTVPAFb28wJpNvo84nObu8vSdUrXvTJ5LmpQqY+O3UBAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T05:38:42.319752Z","bundle_sha256":"dba9253bbb2923a4e9198d343d8364e9077e4278767bfddf02941994833fd324"}}