{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:MSJXOHGTRJRXYYCUHEOTUUXIEF","short_pith_number":"pith:MSJXOHGT","schema_version":"1.0","canonical_sha256":"6493771cd38a637c6054391d3a52e82177765a38df7306ff715c0e3161fa0295","source":{"kind":"arxiv","id":"1209.3883","version":1},"attestation_state":"computed","paper":{"title":"Confirming the 115.5-day periodicity in the X-ray light curve of ULX NGC 5408 X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Hai-Guang Xu, Ji-Ming Lin, Jun-yi Wang, Ming-Jie Xie, Sandor Frey, Tao An, Xiao-Yu Hong, Xu Han","submitted_at":"2012-09-18T09:11:03Z","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"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1209.3883","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-18T09:11:03Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"bb003ad7f6bc31ed661a621d305cda07365e7ae9281ce46bafb86060c8901bf1","abstract_canon_sha256":"5c5f0b9604074a77f890cc516ac384caecb8417e7b14ea09ea4b4451bcc568b5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:26.968810Z","signature_b64":"WEiuJJsUkO0Rlmw/cvAZBgDskKDtc0s4p7Q1FR9v07DUXPeNoxycP5XYVK4KFz4E+1K1LXAD+ppBnU/PHpnnDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6493771cd38a637c6054391d3a52e82177765a38df7306ff715c0e3161fa0295","last_reissued_at":"2026-05-18T01:54:26.968267Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:26.968267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Confirming the 115.5-day periodicity in the X-ray light curve of ULX NGC 5408 X-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Hai-Guang Xu, Ji-Ming Lin, Jun-yi Wang, Ming-Jie Xie, Sandor Frey, Tao An, Xiao-Yu Hong, Xu Han","submitted_at":"2012-09-18T09:11:03Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3883","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1209.3883","created_at":"2026-05-18T01:54:26.968389+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.3883v1","created_at":"2026-05-18T01:54:26.968389+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3883","created_at":"2026-05-18T01:54:26.968389+00:00"},{"alias_kind":"pith_short_12","alias_value":"MSJXOHGTRJRX","created_at":"2026-05-18T12:27:14.488303+00:00"},{"alias_kind":"pith_short_16","alias_value":"MSJXOHGTRJRXYYCU","created_at":"2026-05-18T12:27:14.488303+00:00"},{"alias_kind":"pith_short_8","alias_value":"MSJXOHGT","created_at":"2026-05-18T12:27:14.488303+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF","json":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF.json","graph_json":"https://pith.science/api/pith-number/MSJXOHGTRJRXYYCUHEOTUUXIEF/graph.json","events_json":"https://pith.science/api/pith-number/MSJXOHGTRJRXYYCUHEOTUUXIEF/events.json","paper":"https://pith.science/paper/MSJXOHGT"},"agent_actions":{"view_html":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF","download_json":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF.json","view_paper":"https://pith.science/paper/MSJXOHGT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.3883&json=true","fetch_graph":"https://pith.science/api/pith-number/MSJXOHGTRJRXYYCUHEOTUUXIEF/graph.json","fetch_events":"https://pith.science/api/pith-number/MSJXOHGTRJRXYYCUHEOTUUXIEF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF/action/storage_attestation","attest_author":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF/action/author_attestation","sign_citation":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF/action/citation_signature","submit_replication":"https://pith.science/pith/MSJXOHGTRJRXYYCUHEOTUUXIEF/action/replication_record"}},"created_at":"2026-05-18T01:54:26.968389+00:00","updated_at":"2026-05-18T01:54:26.968389+00:00"}