{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:LCYMAC6VED6WYVNHNYZNK7TRV4","short_pith_number":"pith:LCYMAC6V","canonical_record":{"source":{"id":"1811.08148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-11-20T09:39:50Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"85940b018bbcf99a501276303e0adf0a4f0b43de9f93ad95ffdea2796f8cfa43","abstract_canon_sha256":"2af5246cc13776f4bb6becf520945f915ce2641c18c79cb6b74550e76b9c6734"},"schema_version":"1.0"},"canonical_sha256":"58b0c00bd520fd6c55a76e32d57e71af30c6dffe3c36264f46574a686832dd69","source":{"kind":"arxiv","id":"1811.08148","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08148","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08148v2","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08148","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"pith_short_12","alias_value":"LCYMAC6VED6W","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LCYMAC6VED6WYVNH","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LCYMAC6V","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:LCYMAC6VED6WYVNHNYZNK7TRV4","target":"record","payload":{"canonical_record":{"source":{"id":"1811.08148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-11-20T09:39:50Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"85940b018bbcf99a501276303e0adf0a4f0b43de9f93ad95ffdea2796f8cfa43","abstract_canon_sha256":"2af5246cc13776f4bb6becf520945f915ce2641c18c79cb6b74550e76b9c6734"},"schema_version":"1.0"},"canonical_sha256":"58b0c00bd520fd6c55a76e32d57e71af30c6dffe3c36264f46574a686832dd69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:22.245721Z","signature_b64":"GUVfcSXZ7PpLCht/LxTqun71eoT4nNXhDyQGrROWzHEMzResYscHBKqmnc21ILiRCRVvWTMvnhllJ6XtLKaZCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"58b0c00bd520fd6c55a76e32d57e71af30c6dffe3c36264f46574a686832dd69","last_reissued_at":"2026-05-17T23:48:22.245124Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:22.245124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.08148","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":"2026-05-17T23:48:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g/MxMz+I5gdoFY81Y+9acO69Tig6hJ5rJH8cV+MZN7Q3IOo9uQ5qgms4PDBv1zV8DzBBHEReIERfOnvXkPzZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:22:14.758006Z"},"content_sha256":"5402efc4f49cb933c8c93278b0d8594694b30ec906738cfae09fbaf4d15684c9","schema_version":"1.0","event_id":"sha256:5402efc4f49cb933c8c93278b0d8594694b30ec906738cfae09fbaf4d15684c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:LCYMAC6VED6WYVNHNYZNK7TRV4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards precision tests of general relativity with black hole X-ray reflection spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Andrea Marinucci, Ashutosh Tripathi, Askar B. Abdikamalov, Cosimo Bambi, Dimitry Ayzenberg, Javier A. Garcia, Sourabh Nampalliwar, Thomas Dauser","submitted_at":"2018-11-20T09:39:50Z","abstract_excerpt":"Astrophysical black hole systems are the ideal laboratories for testing Einstein's theory of gravity in the strong field regime. We have recently developed a framework which uses the reflection spectrum of black hole systems to perform precision tests of general relativity by testing the Kerr black hole hypothesis. In this paper, we analyze XMM-Newton and NuSTAR observations of the supermassive black hole in the Seyfert 1 galaxy MCG-06-30-15 with our disk reflection model. We consider the Johannsen metric with the deformation parameters $\\alpha_{13}$ and $\\alpha_{22}$, which quantify deviation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08148","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":"2026-05-17T23:48:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1SfkK61L6qb0YpXbMRqHGEQoB4Zjd3m65o4ITzULHblP+LvaNgeTWZoY6MN3YUBTa7dHI/lZo8NrGR6gamaZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:22:14.758708Z"},"content_sha256":"65d96a37ba1c41438e29bf7a06db74f55fd1a99d4a6d3951cd9ec8634ccb5281","schema_version":"1.0","event_id":"sha256:65d96a37ba1c41438e29bf7a06db74f55fd1a99d4a6d3951cd9ec8634ccb5281"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LCYMAC6VED6WYVNHNYZNK7TRV4/bundle.json","state_url":"https://pith.science/pith/LCYMAC6VED6WYVNHNYZNK7TRV4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LCYMAC6VED6WYVNHNYZNK7TRV4/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":"2026-05-25T06:22:14Z","links":{"resolver":"https://pith.science/pith/LCYMAC6VED6WYVNHNYZNK7TRV4","bundle":"https://pith.science/pith/LCYMAC6VED6WYVNHNYZNK7TRV4/bundle.json","state":"https://pith.science/pith/LCYMAC6VED6WYVNHNYZNK7TRV4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LCYMAC6VED6WYVNHNYZNK7TRV4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:LCYMAC6VED6WYVNHNYZNK7TRV4","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":"2af5246cc13776f4bb6becf520945f915ce2641c18c79cb6b74550e76b9c6734","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-11-20T09:39:50Z","title_canon_sha256":"85940b018bbcf99a501276303e0adf0a4f0b43de9f93ad95ffdea2796f8cfa43"},"schema_version":"1.0","source":{"id":"1811.08148","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.08148","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"arxiv_version","alias_value":"1811.08148v2","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.08148","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"pith_short_12","alias_value":"LCYMAC6VED6W","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LCYMAC6VED6WYVNH","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LCYMAC6V","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:65d96a37ba1c41438e29bf7a06db74f55fd1a99d4a6d3951cd9ec8634ccb5281","target":"graph","created_at":"2026-05-17T23:48:22Z","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":"Astrophysical black hole systems are the ideal laboratories for testing Einstein's theory of gravity in the strong field regime. We have recently developed a framework which uses the reflection spectrum of black hole systems to perform precision tests of general relativity by testing the Kerr black hole hypothesis. In this paper, we analyze XMM-Newton and NuSTAR observations of the supermassive black hole in the Seyfert 1 galaxy MCG-06-30-15 with our disk reflection model. We consider the Johannsen metric with the deformation parameters $\\alpha_{13}$ and $\\alpha_{22}$, which quantify deviation","authors_text":"Andrea Marinucci, Ashutosh Tripathi, Askar B. Abdikamalov, Cosimo Bambi, Dimitry Ayzenberg, Javier A. Garcia, Sourabh Nampalliwar, Thomas Dauser","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-11-20T09:39:50Z","title":"Towards precision tests of general relativity with black hole X-ray reflection spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.08148","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":"sha256:5402efc4f49cb933c8c93278b0d8594694b30ec906738cfae09fbaf4d15684c9","target":"record","created_at":"2026-05-17T23:48:22Z","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":"2af5246cc13776f4bb6becf520945f915ce2641c18c79cb6b74550e76b9c6734","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-11-20T09:39:50Z","title_canon_sha256":"85940b018bbcf99a501276303e0adf0a4f0b43de9f93ad95ffdea2796f8cfa43"},"schema_version":"1.0","source":{"id":"1811.08148","kind":"arxiv","version":2}},"canonical_sha256":"58b0c00bd520fd6c55a76e32d57e71af30c6dffe3c36264f46574a686832dd69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58b0c00bd520fd6c55a76e32d57e71af30c6dffe3c36264f46574a686832dd69","first_computed_at":"2026-05-17T23:48:22.245124Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:22.245124Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GUVfcSXZ7PpLCht/LxTqun71eoT4nNXhDyQGrROWzHEMzResYscHBKqmnc21ILiRCRVvWTMvnhllJ6XtLKaZCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:22.245721Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.08148","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5402efc4f49cb933c8c93278b0d8594694b30ec906738cfae09fbaf4d15684c9","sha256:65d96a37ba1c41438e29bf7a06db74f55fd1a99d4a6d3951cd9ec8634ccb5281"],"state_sha256":"de145217c9fa942b9f6b2a7a6fa446d046b8ef8e913e37891c195b38c9d8a0ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2yLUZimKvMOidMKN2tyeZVztl67HcluPnBU3EtMqXdlcwAmV7pjjuqPGD/x07e2bNGuEyRUx8MS79FI79YEHDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T06:22:14.762137Z","bundle_sha256":"f40129b9ab01dcf97d39714395a1f525aaf560d61a1692e21f5771f7bc4a368b"}}