{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:OECMDA7GMEPJWSLSR33RCFNOGF","short_pith_number":"pith:OECMDA7G","canonical_record":{"source":{"id":"1803.10976","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-29T09:23:07Z","cross_cats_sorted":[],"title_canon_sha256":"ae6d66ecf68cca880e7f67240f6ca8538a676b636ee87330f8e11aaca29263be","abstract_canon_sha256":"cc6ad1d871062547a9bcad2a0703623043278986e5a67e73760295bd16a562a2"},"schema_version":"1.0"},"canonical_sha256":"7104c183e6611e9b49728ef71115ae3172b786d6d51bcb8783a0380259d63a28","source":{"kind":"arxiv","id":"1803.10976","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.10976","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"arxiv_version","alias_value":"1803.10976v1","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10976","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"pith_short_12","alias_value":"OECMDA7GMEPJ","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OECMDA7GMEPJWSLS","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OECMDA7G","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:OECMDA7GMEPJWSLSR33RCFNOGF","target":"record","payload":{"canonical_record":{"source":{"id":"1803.10976","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-29T09:23:07Z","cross_cats_sorted":[],"title_canon_sha256":"ae6d66ecf68cca880e7f67240f6ca8538a676b636ee87330f8e11aaca29263be","abstract_canon_sha256":"cc6ad1d871062547a9bcad2a0703623043278986e5a67e73760295bd16a562a2"},"schema_version":"1.0"},"canonical_sha256":"7104c183e6611e9b49728ef71115ae3172b786d6d51bcb8783a0380259d63a28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:48.847458Z","signature_b64":"mzZf834M2CGXl0hH3e/RiupG+BN5hemHWWA9bgdb1iVka4xdkqIwQuzRCHmLH8eyJm2PFCzOJ+5Ko2AuU0yAAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7104c183e6611e9b49728ef71115ae3172b786d6d51bcb8783a0380259d63a28","last_reissued_at":"2026-05-18T00:18:48.846017Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:48.846017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.10976","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":"2026-05-18T00:18:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GNwNHUFwsq8MKQ66sINAASAjnc2lAY7AUd9IwZI8LZpKnJTaM1CTf0kd3TkjdTnHxJDy2zjjpurBMF7NvWAMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T20:18:19.064728Z"},"content_sha256":"d25c7c626461f1ec70a48a7e2b83ac9f58c0d52d196ca710bd1e7a7410cdb086","schema_version":"1.0","event_id":"sha256:d25c7c626461f1ec70a48a7e2b83ac9f58c0d52d196ca710bd1e7a7410cdb086"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:OECMDA7GMEPJWSLSR33RCFNOGF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a 23.8h QPO in the SWIFT light curve of XMMU J134736.6+173403","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Chichuan Jin, Stefania Carpano","submitted_at":"2018-03-29T09:23:07Z","abstract_excerpt":"XMMU J134736.6+173403 is an X-ray source discovered serendipitously by XMM-Newton which was found to be spatially coincident with a pair of galaxies, including a Seyfert 2 galaxy, but presented in 2003 a very sharp persistent flux drop of a factor 6.5 within 1h. From the analysis of a set of 29 Swift observations conducted from the 6 February to the 23 May 2008, we discovered twin-peak quasi-periodic oscillations (QPOs) with periods of 23.82+-0.07 h and 71.44+-0.57 h. Using a Chandra observation of 2008, we evaluate more accurately the position of the X-ray source and show that the new source "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10976","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":"2026-05-18T00:18:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eKUvds7PfT6oMIAv+/Ul/1szw8FdxLZH9dShh5V8DnKA23vPQYxB65M6dNkVZD4EwAoV6m6z5E3wpF0fwzmSDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T20:18:19.065214Z"},"content_sha256":"b3c77f54562bf876381f860911762a710e9cc3cc1e420b30dd1e87cf1d6b8bcf","schema_version":"1.0","event_id":"sha256:b3c77f54562bf876381f860911762a710e9cc3cc1e420b30dd1e87cf1d6b8bcf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OECMDA7GMEPJWSLSR33RCFNOGF/bundle.json","state_url":"https://pith.science/pith/OECMDA7GMEPJWSLSR33RCFNOGF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OECMDA7GMEPJWSLSR33RCFNOGF/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":"2026-05-20T20:18:19Z","links":{"resolver":"https://pith.science/pith/OECMDA7GMEPJWSLSR33RCFNOGF","bundle":"https://pith.science/pith/OECMDA7GMEPJWSLSR33RCFNOGF/bundle.json","state":"https://pith.science/pith/OECMDA7GMEPJWSLSR33RCFNOGF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OECMDA7GMEPJWSLSR33RCFNOGF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OECMDA7GMEPJWSLSR33RCFNOGF","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":"cc6ad1d871062547a9bcad2a0703623043278986e5a67e73760295bd16a562a2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-29T09:23:07Z","title_canon_sha256":"ae6d66ecf68cca880e7f67240f6ca8538a676b636ee87330f8e11aaca29263be"},"schema_version":"1.0","source":{"id":"1803.10976","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.10976","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"arxiv_version","alias_value":"1803.10976v1","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10976","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"pith_short_12","alias_value":"OECMDA7GMEPJ","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OECMDA7GMEPJWSLS","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OECMDA7G","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:b3c77f54562bf876381f860911762a710e9cc3cc1e420b30dd1e87cf1d6b8bcf","target":"graph","created_at":"2026-05-18T00:18:48Z","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":"XMMU J134736.6+173403 is an X-ray source discovered serendipitously by XMM-Newton which was found to be spatially coincident with a pair of galaxies, including a Seyfert 2 galaxy, but presented in 2003 a very sharp persistent flux drop of a factor 6.5 within 1h. From the analysis of a set of 29 Swift observations conducted from the 6 February to the 23 May 2008, we discovered twin-peak quasi-periodic oscillations (QPOs) with periods of 23.82+-0.07 h and 71.44+-0.57 h. Using a Chandra observation of 2008, we evaluate more accurately the position of the X-ray source and show that the new source ","authors_text":"Chichuan Jin, Stefania Carpano","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-29T09:23:07Z","title":"Discovery of a 23.8h QPO in the SWIFT light curve of XMMU J134736.6+173403"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10976","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:d25c7c626461f1ec70a48a7e2b83ac9f58c0d52d196ca710bd1e7a7410cdb086","target":"record","created_at":"2026-05-18T00:18:48Z","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":"cc6ad1d871062547a9bcad2a0703623043278986e5a67e73760295bd16a562a2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-03-29T09:23:07Z","title_canon_sha256":"ae6d66ecf68cca880e7f67240f6ca8538a676b636ee87330f8e11aaca29263be"},"schema_version":"1.0","source":{"id":"1803.10976","kind":"arxiv","version":1}},"canonical_sha256":"7104c183e6611e9b49728ef71115ae3172b786d6d51bcb8783a0380259d63a28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7104c183e6611e9b49728ef71115ae3172b786d6d51bcb8783a0380259d63a28","first_computed_at":"2026-05-18T00:18:48.846017Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:48.846017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mzZf834M2CGXl0hH3e/RiupG+BN5hemHWWA9bgdb1iVka4xdkqIwQuzRCHmLH8eyJm2PFCzOJ+5Ko2AuU0yAAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:48.847458Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.10976","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d25c7c626461f1ec70a48a7e2b83ac9f58c0d52d196ca710bd1e7a7410cdb086","sha256:b3c77f54562bf876381f860911762a710e9cc3cc1e420b30dd1e87cf1d6b8bcf"],"state_sha256":"515982df1cf69b319153138cc428656dc90be4c0fe39401cdcbe30c7c96f0d6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Tc3e1o22sj4FYQJ1Aqsv8RFXQvq2vSJCe8urTmZholO70aeAOR9Prlx8Cp/aEi89gIWuZIQkkFe/ugWQ5XTAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T20:18:19.067701Z","bundle_sha256":"694181d600b40e5aaaa798f04c753e85f1574312a9c799d1f58c766c9bd01f32"}}