{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:C72UJDS747MNKVLKGDFX2B7YRO","short_pith_number":"pith:C72UJDS7","canonical_record":{"source":{"id":"2011.06472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-12T16:26:09Z","cross_cats_sorted":[],"title_canon_sha256":"fc65b851ede0635308b3a8f15e6fbb31f582255ab754e07c698645041f05b4d7","abstract_canon_sha256":"bc2d68a122bb3443f18d4c8e205b154353b6064977260457923608899c3bde45"},"schema_version":"1.0"},"canonical_sha256":"17f5448e5fe7d8d5556a30cb7d07f88b9adad5ee2bc93f1fa1b00598b1ae455b","source":{"kind":"arxiv","id":"2011.06472","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.06472","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"arxiv_version","alias_value":"2011.06472v1","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.06472","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"pith_short_12","alias_value":"C72UJDS747MN","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"pith_short_16","alias_value":"C72UJDS747MNKVLK","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"pith_short_8","alias_value":"C72UJDS7","created_at":"2026-07-05T01:51:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:C72UJDS747MNKVLKGDFX2B7YRO","target":"record","payload":{"canonical_record":{"source":{"id":"2011.06472","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-12T16:26:09Z","cross_cats_sorted":[],"title_canon_sha256":"fc65b851ede0635308b3a8f15e6fbb31f582255ab754e07c698645041f05b4d7","abstract_canon_sha256":"bc2d68a122bb3443f18d4c8e205b154353b6064977260457923608899c3bde45"},"schema_version":"1.0"},"canonical_sha256":"17f5448e5fe7d8d5556a30cb7d07f88b9adad5ee2bc93f1fa1b00598b1ae455b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:51:28.574241Z","signature_b64":"anGHVWEshL6PdETOJHsxjQ5D74CYCKZwzVkDFenYvvbLZh9sQYnjoE7Kjhe0xz6LqJ6cjz4GXWQkeqY51JFpBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17f5448e5fe7d8d5556a30cb7d07f88b9adad5ee2bc93f1fa1b00598b1ae455b","last_reissued_at":"2026-07-05T01:51:28.573829Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:51:28.573829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.06472","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":"2026-07-05T01:51:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oI4EG6QNZOSn6EsjH2VMVv7/QX3kSt2E5vQmxLGsFaf8kcODr+OZIB1xBUNtgs5eH2u1EiYwdQmnQnI0ZITMBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T14:29:58.639914Z"},"content_sha256":"aebf479286faed41572dc61ab1ff819ad44758e404f325e9e013fc97124a8264","schema_version":"1.0","event_id":"sha256:aebf479286faed41572dc61ab1ff819ad44758e404f325e9e013fc97124a8264"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:C72UJDS747MNKVLKGDFX2B7YRO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modelling X-ray RMS spectra II: the ultra-fast outflow of PDS 456","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Joyce, A. P. Lobban, F. F\\\"urst, G. A. Matzeu, J. N. Reeves, L. H\\\"arer, M. L. Parker, W. N. Alston, Z. Igo","submitted_at":"2020-11-12T16:26:09Z","abstract_excerpt":"We present an improved model for excess variance spectra describing ultra-fast outflows and successfully apply it to the luminous (L ~ 10^47 erg/s) low-redshift (z = 0.184) quasar PDS 456. The model is able to account well for the broadening of the spike-like features of these outflows in the excess variance spectrum of PDS 456, by considering two effects: a correlation between the outflow velocity and the logarithmic X-ray flux and intrinsic Doppler broadening with v_int = 10^4 km/s. The models were generated by calculating the fractional excess variance of count spectra from a Monte Carlo si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.06472","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/2011.06472/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":"2026-07-05T01:51:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WesoFtPnbg+puwOjri032kOxqrFSaXQ99ddFclG3K1eMX0a4H8srI+wMID/IN4fsENACZ6UVmXxApg5XdRo/Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T14:29:58.640284Z"},"content_sha256":"afc07417f082518ed7b71ca1ba8ff9aa494dc23cb223deb29b5b52d0cbbb74b2","schema_version":"1.0","event_id":"sha256:afc07417f082518ed7b71ca1ba8ff9aa494dc23cb223deb29b5b52d0cbbb74b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C72UJDS747MNKVLKGDFX2B7YRO/bundle.json","state_url":"https://pith.science/pith/C72UJDS747MNKVLKGDFX2B7YRO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C72UJDS747MNKVLKGDFX2B7YRO/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":"2026-07-10T14:29:58Z","links":{"resolver":"https://pith.science/pith/C72UJDS747MNKVLKGDFX2B7YRO","bundle":"https://pith.science/pith/C72UJDS747MNKVLKGDFX2B7YRO/bundle.json","state":"https://pith.science/pith/C72UJDS747MNKVLKGDFX2B7YRO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C72UJDS747MNKVLKGDFX2B7YRO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:C72UJDS747MNKVLKGDFX2B7YRO","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":"bc2d68a122bb3443f18d4c8e205b154353b6064977260457923608899c3bde45","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-12T16:26:09Z","title_canon_sha256":"fc65b851ede0635308b3a8f15e6fbb31f582255ab754e07c698645041f05b4d7"},"schema_version":"1.0","source":{"id":"2011.06472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.06472","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"arxiv_version","alias_value":"2011.06472v1","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.06472","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"pith_short_12","alias_value":"C72UJDS747MN","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"pith_short_16","alias_value":"C72UJDS747MNKVLK","created_at":"2026-07-05T01:51:28Z"},{"alias_kind":"pith_short_8","alias_value":"C72UJDS7","created_at":"2026-07-05T01:51:28Z"}],"graph_snapshots":[{"event_id":"sha256:afc07417f082518ed7b71ca1ba8ff9aa494dc23cb223deb29b5b52d0cbbb74b2","target":"graph","created_at":"2026-07-05T01:51:28Z","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/2011.06472/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an improved model for excess variance spectra describing ultra-fast outflows and successfully apply it to the luminous (L ~ 10^47 erg/s) low-redshift (z = 0.184) quasar PDS 456. The model is able to account well for the broadening of the spike-like features of these outflows in the excess variance spectrum of PDS 456, by considering two effects: a correlation between the outflow velocity and the logarithmic X-ray flux and intrinsic Doppler broadening with v_int = 10^4 km/s. The models were generated by calculating the fractional excess variance of count spectra from a Monte Carlo si","authors_text":"A. Joyce, A. P. Lobban, F. F\\\"urst, G. A. Matzeu, J. N. Reeves, L. H\\\"arer, M. L. Parker, W. N. Alston, Z. Igo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-12T16:26:09Z","title":"Modelling X-ray RMS spectra II: the ultra-fast outflow of PDS 456"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.06472","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:aebf479286faed41572dc61ab1ff819ad44758e404f325e9e013fc97124a8264","target":"record","created_at":"2026-07-05T01:51:28Z","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":"bc2d68a122bb3443f18d4c8e205b154353b6064977260457923608899c3bde45","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-12T16:26:09Z","title_canon_sha256":"fc65b851ede0635308b3a8f15e6fbb31f582255ab754e07c698645041f05b4d7"},"schema_version":"1.0","source":{"id":"2011.06472","kind":"arxiv","version":1}},"canonical_sha256":"17f5448e5fe7d8d5556a30cb7d07f88b9adad5ee2bc93f1fa1b00598b1ae455b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17f5448e5fe7d8d5556a30cb7d07f88b9adad5ee2bc93f1fa1b00598b1ae455b","first_computed_at":"2026-07-05T01:51:28.573829Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:51:28.573829Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"anGHVWEshL6PdETOJHsxjQ5D74CYCKZwzVkDFenYvvbLZh9sQYnjoE7Kjhe0xz6LqJ6cjz4GXWQkeqY51JFpBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:51:28.574241Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.06472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aebf479286faed41572dc61ab1ff819ad44758e404f325e9e013fc97124a8264","sha256:afc07417f082518ed7b71ca1ba8ff9aa494dc23cb223deb29b5b52d0cbbb74b2"],"state_sha256":"d7bca6d21daaca36c6cc217f7e9784364537744696ad75ced6c1dd0e9ef48d93"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t7Jplr50qUWxTZGk/1lY0ugbOkJAXgDMbO+tG+SWL0mfnf1ODsq7HaSEy494ICpO05TErRe56eGJixU5kovIDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T14:29:58.642290Z","bundle_sha256":"649bc15a1680862b5a6efc8834d4cd0bd807647e15f454fea6889284870fd759"}}