{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2N7O7BXFG7A2N4VSA7363K5LOA","short_pith_number":"pith:2N7O7BXF","canonical_record":{"source":{"id":"1311.1821","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-07T21:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"cbc9d94c8369ef5075b4a071bfafbd78092f18e5cd746f1216c068b1106b1369","abstract_canon_sha256":"9f30332bef15c6983a70e8da98a03151a00a47bde6537834db5e1552afda04de"},"schema_version":"1.0"},"canonical_sha256":"d37eef86e537c1a6f2b207f7edabab703dfbde89c567fb266df59892ef808ea7","source":{"kind":"arxiv","id":"1311.1821","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1821","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1821v1","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1821","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"pith_short_12","alias_value":"2N7O7BXFG7A2","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2N7O7BXFG7A2N4VS","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2N7O7BXF","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2N7O7BXFG7A2N4VSA7363K5LOA","target":"record","payload":{"canonical_record":{"source":{"id":"1311.1821","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-07T21:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"cbc9d94c8369ef5075b4a071bfafbd78092f18e5cd746f1216c068b1106b1369","abstract_canon_sha256":"9f30332bef15c6983a70e8da98a03151a00a47bde6537834db5e1552afda04de"},"schema_version":"1.0"},"canonical_sha256":"d37eef86e537c1a6f2b207f7edabab703dfbde89c567fb266df59892ef808ea7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:33.094125Z","signature_b64":"T6j0KH6xPdiWLLjvKzZcjTqIQ+QI5/qeByG52gRYzBrP3Y8G3ZkjejeomfvGpgchH/Bcdf5Lk5jTO2a13F2nAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d37eef86e537c1a6f2b207f7edabab703dfbde89c567fb266df59892ef808ea7","last_reissued_at":"2026-05-18T01:46:33.093549Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:33.093549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.1821","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":"2026-05-18T01:46:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xJE0Im86r8m5qH2YJm365VxDJRSdv/qzkgMAnYzl09HwW0hrscywzR7q7gGbDj3sPdXx3MTv5aV4E35Tmdm5Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T16:07:12.272419Z"},"content_sha256":"4c7155f8789adb7d663b79b1b1535fe278e5b61f9aea395ed81c69ea8342dd41","schema_version":"1.0","event_id":"sha256:4c7155f8789adb7d663b79b1b1535fe278e5b61f9aea395ed81c69ea8342dd41"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2N7O7BXFG7A2N4VSA7363K5LOA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Around 200 new X-ray binary IDs from 13 years of Chandra observations of the M31 center","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"F. Baganoff, F. Primini, M. R. Garcia, R. Barnard, S. S. Murray, Z. Li","submitted_at":"2013-11-07T21:00:05Z","abstract_excerpt":"We have created 0.3--10 keV, 13 year, unabsorbed luminosity lightcurves for 528 X-ray sources in the central 20' of M31. We have 174 Chandra observations spaced at ~1 month intervals thanks to our transient monitoring program, deeper observations of the M31 nucleus, and some public data from other surveys. We created 0.5--4.5 keV structure functions (SFs) for each source, for comparison with the ensemble structure function of AGN. We find 220 X-ray sources with luminosities > ~1E+35 erg/s that have SFs with significantly more variability than the ensemble AGN SF, and are likely X-ray binaries "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1821","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":""},"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":"2026-05-18T01:46:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kFzRs/3f5t7OK6KsNt7R6cbtXJgpfnpgy1JdCQ3T+WdB8JxfHIis/nYWeD59ucZZFzjvOG+S+Pl8A5Xz9M4AAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T16:07:12.273042Z"},"content_sha256":"4d26892a14121a70875f160861ec1a80e6527505dea9ccea41844a5bac511d99","schema_version":"1.0","event_id":"sha256:4d26892a14121a70875f160861ec1a80e6527505dea9ccea41844a5bac511d99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2N7O7BXFG7A2N4VSA7363K5LOA/bundle.json","state_url":"https://pith.science/pith/2N7O7BXFG7A2N4VSA7363K5LOA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2N7O7BXFG7A2N4VSA7363K5LOA/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":"2026-08-06T16:07:12Z","links":{"resolver":"https://pith.science/pith/2N7O7BXFG7A2N4VSA7363K5LOA","bundle":"https://pith.science/pith/2N7O7BXFG7A2N4VSA7363K5LOA/bundle.json","state":"https://pith.science/pith/2N7O7BXFG7A2N4VSA7363K5LOA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2N7O7BXFG7A2N4VSA7363K5LOA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2N7O7BXFG7A2N4VSA7363K5LOA","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":"9f30332bef15c6983a70e8da98a03151a00a47bde6537834db5e1552afda04de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-07T21:00:05Z","title_canon_sha256":"cbc9d94c8369ef5075b4a071bfafbd78092f18e5cd746f1216c068b1106b1369"},"schema_version":"1.0","source":{"id":"1311.1821","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1821","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1821v1","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1821","created_at":"2026-05-18T01:46:33Z"},{"alias_kind":"pith_short_12","alias_value":"2N7O7BXFG7A2","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2N7O7BXFG7A2N4VS","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2N7O7BXF","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:4d26892a14121a70875f160861ec1a80e6527505dea9ccea41844a5bac511d99","target":"graph","created_at":"2026-05-18T01:46:33Z","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"},"paper":{"abstract_excerpt":"We have created 0.3--10 keV, 13 year, unabsorbed luminosity lightcurves for 528 X-ray sources in the central 20' of M31. We have 174 Chandra observations spaced at ~1 month intervals thanks to our transient monitoring program, deeper observations of the M31 nucleus, and some public data from other surveys. We created 0.5--4.5 keV structure functions (SFs) for each source, for comparison with the ensemble structure function of AGN. We find 220 X-ray sources with luminosities > ~1E+35 erg/s that have SFs with significantly more variability than the ensemble AGN SF, and are likely X-ray binaries ","authors_text":"F. Baganoff, F. Primini, M. R. Garcia, R. Barnard, S. S. Murray, Z. Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-07T21:00:05Z","title":"Around 200 new X-ray binary IDs from 13 years of Chandra observations of the M31 center"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1821","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":"sha256:4c7155f8789adb7d663b79b1b1535fe278e5b61f9aea395ed81c69ea8342dd41","target":"record","created_at":"2026-05-18T01:46:33Z","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":"9f30332bef15c6983a70e8da98a03151a00a47bde6537834db5e1552afda04de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-07T21:00:05Z","title_canon_sha256":"cbc9d94c8369ef5075b4a071bfafbd78092f18e5cd746f1216c068b1106b1369"},"schema_version":"1.0","source":{"id":"1311.1821","kind":"arxiv","version":1}},"canonical_sha256":"d37eef86e537c1a6f2b207f7edabab703dfbde89c567fb266df59892ef808ea7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d37eef86e537c1a6f2b207f7edabab703dfbde89c567fb266df59892ef808ea7","first_computed_at":"2026-05-18T01:46:33.093549Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:33.093549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T6j0KH6xPdiWLLjvKzZcjTqIQ+QI5/qeByG52gRYzBrP3Y8G3ZkjejeomfvGpgchH/Bcdf5Lk5jTO2a13F2nAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:33.094125Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.1821","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c7155f8789adb7d663b79b1b1535fe278e5b61f9aea395ed81c69ea8342dd41","sha256:4d26892a14121a70875f160861ec1a80e6527505dea9ccea41844a5bac511d99"],"state_sha256":"7a385efe4b84fb6bd18f248fea47655ccf6814ce1932eed1bae9ef4d4eabf2e5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cPOCMoO/ERhjbM/N1Nt+pAUsMxmbWGYQErqkAc323Fi7fFLMmsoJ+M9bCtHjd2PI5Uzy/zMklINIeR/A6sldCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T16:07:12.279026Z","bundle_sha256":"25cbbf5741192f9ea8360f12712d875af2652fb7d78f4c9918372235779f3d05"}}