{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:4SGNLFN6U6AEBLHNGYEV4YINZG","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":"b480b2d0781367978553c5788370cf2acf5c4be34e1319ab3615bba6e2369dbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-02-01T05:54:02Z","title_canon_sha256":"771258760f7fe9ffc297dfd96504206b571f1e7ffd6a71f9e719ef4b6805939f"},"schema_version":"1.0","source":{"id":"2302.00260","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.00260","created_at":"2026-07-05T05:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"2302.00260v1","created_at":"2026-07-05T05:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.00260","created_at":"2026-07-05T05:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"4SGNLFN6U6AE","created_at":"2026-07-05T05:41:40Z"},{"alias_kind":"pith_short_16","alias_value":"4SGNLFN6U6AEBLHN","created_at":"2026-07-05T05:41:40Z"},{"alias_kind":"pith_short_8","alias_value":"4SGNLFN6","created_at":"2026-07-05T05:41:40Z"}],"graph_snapshots":[{"event_id":"sha256:717771e4c30267888df7e15139697f6a2b4509a32deba45cf24dd4aa64a0d2f0","target":"graph","created_at":"2026-07-05T05:41:40Z","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/2302.00260/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"SMC X-1 is a high-mass X-ray binary showing superorbital modulation with an unstable period. Previous monitoring shows three excursion events in 1996--1998, 2005--2007, and 2014--2016. The superorbital period drifts from >60 days to <40 days and then evolves back during an excursion. Here we report a new excursion event of SMC X-1 in 2020--2021, indicating that the superorbital modulation has an unpredictable, chaotic nature. We trace the spin-period evolution and find that the spin-up rate accelerated one year before the onset of this new excursion, which suggests a possible inside-out proces","authors_text":"Arash Bahramian, Chin-Ping Hu, Daryl Haggard, Diego Altamirano, Jamie Kennea, Joey Neilsen, Kristen C. Dage, McKinley Brumback, Philip A. Charles, Rawan Karam, Ryan C. Hickox, Tatehiro Mihara, Wasundara Athukoralalage, William I. Clarkson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-02-01T05:54:02Z","title":"Monitoring observations of SMC X-1's excursions (MOOSE)-II: A new excursion accompanies spin-up acceleration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.00260","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":"sha256:1a06e0d798d34cb6c9b2308d43391487aeebd93d69ca06647eaec34d698747c0","target":"record","created_at":"2026-07-05T05:41:40Z","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":"b480b2d0781367978553c5788370cf2acf5c4be34e1319ab3615bba6e2369dbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-02-01T05:54:02Z","title_canon_sha256":"771258760f7fe9ffc297dfd96504206b571f1e7ffd6a71f9e719ef4b6805939f"},"schema_version":"1.0","source":{"id":"2302.00260","kind":"arxiv","version":1}},"canonical_sha256":"e48cd595bea78040aced36095e610dc9894aeb53cd3fc24fd007046611eb7cc6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e48cd595bea78040aced36095e610dc9894aeb53cd3fc24fd007046611eb7cc6","first_computed_at":"2026-07-05T05:41:40.738483Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:41:40.738483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H34J9M+aHFHAUZ4vd3MyPGeigyp7NB9D+4s1FmKz3PPPbI0mxhOwFD/Q/yqd8/odEezpQEBBsGyrSFyTOLvOCg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:41:40.738853Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.00260","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1a06e0d798d34cb6c9b2308d43391487aeebd93d69ca06647eaec34d698747c0","sha256:717771e4c30267888df7e15139697f6a2b4509a32deba45cf24dd4aa64a0d2f0"],"state_sha256":"030cac494a7c44c4789dad226ffa3343b98f21e83d499820f90487c72bd2a87f"}