{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MSJXOHGTRJRXYYCUHEOTUUXIEF","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":"5c5f0b9604074a77f890cc516ac384caecb8417e7b14ea09ea4b4451bcc568b5","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-18T09:11:03Z","title_canon_sha256":"bb003ad7f6bc31ed661a621d305cda07365e7ae9281ce46bafb86060c8901bf1"},"schema_version":"1.0","source":{"id":"1209.3883","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.3883","created_at":"2026-05-18T01:54:26Z"},{"alias_kind":"arxiv_version","alias_value":"1209.3883v1","created_at":"2026-05-18T01:54:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3883","created_at":"2026-05-18T01:54:26Z"},{"alias_kind":"pith_short_12","alias_value":"MSJXOHGTRJRX","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MSJXOHGTRJRXYYCU","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MSJXOHGT","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:5377ce293b56ee8e6d7c4765734751d223fad54dcb4b35a70a6a3e7b2e51c442","target":"graph","created_at":"2026-05-18T01:54:26Z","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":"The Swift/XRT light curve of the ultraluminous X-ray (ULX) source NGC 5408 X-1 was re-analyzed with two new numerical approaches, Weighted Wavelet $Z$-transform (WWZ) and CLEANest, that are different from previous studies. Both techniques detected a prominent periodicity with a time scale of $115.5\\pm1.5$ days, in excellent agreement with the detection of the same periodicity first reported by Strohmayer (2009). Monte Carlo simulation was employed to test the statisiticak confidence of the 115.5-day periodicity, yielding a statistical significance of $> 99.98%$ (or $>3.8\\sigma$). The robust de","authors_text":"Hai-Guang Xu, Ji-Ming Lin, Jun-yi Wang, Ming-Jie Xie, Sandor Frey, Tao An, Xiao-Yu Hong, Xu Han","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-18T09:11:03Z","title":"Confirming the 115.5-day periodicity in the X-ray light curve of ULX NGC 5408 X-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3883","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":"sha256:6fe021f6728db65279a2c219cced56809ff7389ae0ba53b0d10db1b34d8814e7","target":"record","created_at":"2026-05-18T01:54:26Z","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":"5c5f0b9604074a77f890cc516ac384caecb8417e7b14ea09ea4b4451bcc568b5","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-18T09:11:03Z","title_canon_sha256":"bb003ad7f6bc31ed661a621d305cda07365e7ae9281ce46bafb86060c8901bf1"},"schema_version":"1.0","source":{"id":"1209.3883","kind":"arxiv","version":1}},"canonical_sha256":"6493771cd38a637c6054391d3a52e82177765a38df7306ff715c0e3161fa0295","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6493771cd38a637c6054391d3a52e82177765a38df7306ff715c0e3161fa0295","first_computed_at":"2026-05-18T01:54:26.968267Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:26.968267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WEiuJJsUkO0Rlmw/cvAZBgDskKDtc0s4p7Q1FR9v07DUXPeNoxycP5XYVK4KFz4E+1K1LXAD+ppBnU/PHpnnDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:26.968810Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.3883","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fe021f6728db65279a2c219cced56809ff7389ae0ba53b0d10db1b34d8814e7","sha256:5377ce293b56ee8e6d7c4765734751d223fad54dcb4b35a70a6a3e7b2e51c442"],"state_sha256":"1a225a479bb11b3c597072dfa5eb5d3bfa838b5a1344a7f4c05100818008af0e"}