{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:5XSKLMLNJBDZ23VFDNDEP24IV5","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":"95e9ccc5489c87648dbe462cd611c3206e43f2f07d25318b689626c799a885f6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-09-28T17:48:00Z","title_canon_sha256":"8ce681bc566888432292ef0350a8493854baba64ae4bd7fcb5347f670c2fc841"},"schema_version":"1.0","source":{"id":"astro-ph/9909472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9909472","created_at":"2026-07-04T16:11:39Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9909472v1","created_at":"2026-07-04T16:11:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9909472","created_at":"2026-07-04T16:11:39Z"},{"alias_kind":"pith_short_12","alias_value":"5XSKLMLNJBDZ","created_at":"2026-07-04T16:11:39Z"},{"alias_kind":"pith_short_16","alias_value":"5XSKLMLNJBDZ23VF","created_at":"2026-07-04T16:11:39Z"},{"alias_kind":"pith_short_8","alias_value":"5XSKLMLN","created_at":"2026-07-04T16:11:39Z"}],"graph_snapshots":[{"event_id":"sha256:f40cdb02080fdbfbd48793d0b32a0c2c7032296045030730e1086933acc65fe0","target":"graph","created_at":"2026-07-04T16:11:39Z","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/astro-ph/9909472/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a systematic, homogeneous analysis of all the EXOSAT ME, high time resolution data on Sco X-1. We investigate all power spectral properties of the $<$100 Hz quasi-periodic oscillations (QPO) and noise of Sco X-1 as a function of position on the Z-shaped track traced out in the X-ray colour-colour diagram. Generally, the properties of Sco X-1 vary smoothly as a function of position along the Z track. However, some variability parameters change abruptly at either of the vertices of the Z track indicating that the branches of the Z track represent distinct source states not only in spe","authors_text":"Michiel van der Klis, Stefan W. Dieters","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-09-28T17:48:00Z","title":"The Timing Properties of Sco X-1 along its Z track as seen with EXOSAT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9909472","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:a50877a19c486218847ff1695d050a8977af1476f3f3a70b6bc1a6818498b4df","target":"record","created_at":"2026-07-04T16:11:39Z","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":"95e9ccc5489c87648dbe462cd611c3206e43f2f07d25318b689626c799a885f6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-09-28T17:48:00Z","title_canon_sha256":"8ce681bc566888432292ef0350a8493854baba64ae4bd7fcb5347f670c2fc841"},"schema_version":"1.0","source":{"id":"astro-ph/9909472","kind":"arxiv","version":1}},"canonical_sha256":"ede4a5b16d48479d6ea51b4647eb88af65bbf5d58420f30510bacd925f0ca1a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ede4a5b16d48479d6ea51b4647eb88af65bbf5d58420f30510bacd925f0ca1a8","first_computed_at":"2026-07-04T16:11:39.289292Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:11:39.289292Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gjOLuSqTk1TaPpftxNmVK10snTfAV2nyvrC6Gf8rGhVlIXJy7X7RdRPTIx68ExAAtkyVpTKWGVpDWUMreMarCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:11:39.289653Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9909472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a50877a19c486218847ff1695d050a8977af1476f3f3a70b6bc1a6818498b4df","sha256:f40cdb02080fdbfbd48793d0b32a0c2c7032296045030730e1086933acc65fe0"],"state_sha256":"e8d491d5a691f69d6bdb9abdc222464d2ffc15dd9f5cddc6c71508fa5718629e"}