{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:C6WQZT5OF2IA7K6Z7MXFRZI7JT","short_pith_number":"pith:C6WQZT5O","canonical_record":{"source":{"id":"2006.15838","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-29T06:51:58Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"fcd39875380afb21142af2883c00c425c407f8ddb455974b1009e942116963dc","abstract_canon_sha256":"512f16d7dad56cc8fd6d546c38aa7327d5df2eee31b46b030de69d1dd032d6bb"},"schema_version":"1.0"},"canonical_sha256":"17ad0ccfae2e900fabd9fb2e58e51f4cc96d6c9d7e857a86f13e1313d28a7a8f","source":{"kind":"arxiv","id":"2006.15838","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15838","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15838v2","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15838","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"C6WQZT5OF2IA","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"C6WQZT5OF2IA7K6Z","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"C6WQZT5O","created_at":"2026-07-05T02:26:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:C6WQZT5OF2IA7K6Z7MXFRZI7JT","target":"record","payload":{"canonical_record":{"source":{"id":"2006.15838","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-29T06:51:58Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"fcd39875380afb21142af2883c00c425c407f8ddb455974b1009e942116963dc","abstract_canon_sha256":"512f16d7dad56cc8fd6d546c38aa7327d5df2eee31b46b030de69d1dd032d6bb"},"schema_version":"1.0"},"canonical_sha256":"17ad0ccfae2e900fabd9fb2e58e51f4cc96d6c9d7e857a86f13e1313d28a7a8f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:26:12.836607Z","signature_b64":"94U1CghYhoy8AK32+gxNnWS8TIov2dIdeIHUCfcAzv3SpAdzXhcZgt1EmcWA1azYKPw9TJH4fkFrtBfuyziODA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17ad0ccfae2e900fabd9fb2e58e51f4cc96d6c9d7e857a86f13e1313d28a7a8f","last_reissued_at":"2026-07-05T02:26:12.836053Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:26:12.836053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.15838","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":"2026-07-05T02:26:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0x+2lHA8v+Um6dfIa5A+uCV1IrHc9NgVOnv4Q/7fS73PgidPMnGHBhCw7lTdreiz/cemNJnTHIWJhqetrrysCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T18:09:31.986405Z"},"content_sha256":"30f27d6c0186a539bc23b634799e0adde924b58f40c26af43f7c6e581d60609b","schema_version":"1.0","event_id":"sha256:30f27d6c0186a539bc23b634799e0adde924b58f40c26af43f7c6e581d60609b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:C6WQZT5OF2IA7K6Z7MXFRZI7JT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impact of the returning radiation on the analysis of the reflection spectra of black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Andrzej Niedzwiecki, Cosimo Bambi, Dimitry Ayzenberg, Michal Szanecki, Shafqat Riaz","submitted_at":"2020-06-29T06:51:58Z","abstract_excerpt":"A fraction of the electromagnetic radiation emitted from the surface of a geometrically thin and optically thick accretion disk of a black hole returns to the disk because of the strong light bending in the vicinity of the compact object (returning radiation). While such radiation clearly affects the observed spectrum of the source, it is often neglected in theoretical models. In the present paper, we study the impact of the returning radiation on relativistic reflection spectra. Assuming neutral material in the disk, we estimate the systematic uncertainties on the measurement of the propertie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15838","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.15838/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":"2026-07-05T02:26:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UPi5i8SeBAE1cpoBkzVASIds7Q0o23XtEx4B2ifoFBT5hnaI8Y32FlvNZggJtQMuDn+zqqNZE7N99emv2yKhDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T18:09:31.986909Z"},"content_sha256":"d4ee320736495b1048cb84424c3c419b71686b106462f83a9bd4598ded7062e9","schema_version":"1.0","event_id":"sha256:d4ee320736495b1048cb84424c3c419b71686b106462f83a9bd4598ded7062e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT/bundle.json","state_url":"https://pith.science/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT/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":"2026-08-06T18:09:31Z","links":{"resolver":"https://pith.science/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT","bundle":"https://pith.science/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT/bundle.json","state":"https://pith.science/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C6WQZT5OF2IA7K6Z7MXFRZI7JT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:C6WQZT5OF2IA7K6Z7MXFRZI7JT","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":"512f16d7dad56cc8fd6d546c38aa7327d5df2eee31b46b030de69d1dd032d6bb","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-29T06:51:58Z","title_canon_sha256":"fcd39875380afb21142af2883c00c425c407f8ddb455974b1009e942116963dc"},"schema_version":"1.0","source":{"id":"2006.15838","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15838","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15838v2","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15838","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"pith_short_12","alias_value":"C6WQZT5OF2IA","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"C6WQZT5OF2IA7K6Z","created_at":"2026-07-05T02:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"C6WQZT5O","created_at":"2026-07-05T02:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:d4ee320736495b1048cb84424c3c419b71686b106462f83a9bd4598ded7062e9","target":"graph","created_at":"2026-07-05T02:26:12Z","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/2006.15838/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A fraction of the electromagnetic radiation emitted from the surface of a geometrically thin and optically thick accretion disk of a black hole returns to the disk because of the strong light bending in the vicinity of the compact object (returning radiation). While such radiation clearly affects the observed spectrum of the source, it is often neglected in theoretical models. In the present paper, we study the impact of the returning radiation on relativistic reflection spectra. Assuming neutral material in the disk, we estimate the systematic uncertainties on the measurement of the propertie","authors_text":"Andrzej Niedzwiecki, Cosimo Bambi, Dimitry Ayzenberg, Michal Szanecki, Shafqat Riaz","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-29T06:51:58Z","title":"Impact of the returning radiation on the analysis of the reflection spectra of black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15838","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":"sha256:30f27d6c0186a539bc23b634799e0adde924b58f40c26af43f7c6e581d60609b","target":"record","created_at":"2026-07-05T02:26:12Z","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":"512f16d7dad56cc8fd6d546c38aa7327d5df2eee31b46b030de69d1dd032d6bb","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-06-29T06:51:58Z","title_canon_sha256":"fcd39875380afb21142af2883c00c425c407f8ddb455974b1009e942116963dc"},"schema_version":"1.0","source":{"id":"2006.15838","kind":"arxiv","version":2}},"canonical_sha256":"17ad0ccfae2e900fabd9fb2e58e51f4cc96d6c9d7e857a86f13e1313d28a7a8f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17ad0ccfae2e900fabd9fb2e58e51f4cc96d6c9d7e857a86f13e1313d28a7a8f","first_computed_at":"2026-07-05T02:26:12.836053Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:26:12.836053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"94U1CghYhoy8AK32+gxNnWS8TIov2dIdeIHUCfcAzv3SpAdzXhcZgt1EmcWA1azYKPw9TJH4fkFrtBfuyziODA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:26:12.836607Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.15838","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30f27d6c0186a539bc23b634799e0adde924b58f40c26af43f7c6e581d60609b","sha256:d4ee320736495b1048cb84424c3c419b71686b106462f83a9bd4598ded7062e9"],"state_sha256":"2be4bb3d36db151756e201e8563220e00d3310d92ee214bba03c68ab5dc5c443"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Dccjii/Ie60xUPrnKpRjBT/pZDHu1gkt89hv/5tYq8khMULkP81clyBSNTq+H4xwSYFkkZcSKtb4ooKatB+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T18:09:31.997793Z","bundle_sha256":"b7eec43d68d4c840610cba6d719f3c93753f2f16cc39ca9db84b7d6487283067"}}