{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:CVTWORXLR4E6LDLUXCUIMWF7YK","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":"e1a3fcd8899e1d00fe234609e0dde42d944f2426c1fb6b39f487a66187201de0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-11-19T19:28:38Z","title_canon_sha256":"a99eec22ebc35c43a91395e2aba37b3169b86f55fbf940421c516b5e78692da3"},"schema_version":"1.0","source":{"id":"astro-ph/9911373","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9911373","created_at":"2026-07-04T16:11:55Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9911373v2","created_at":"2026-07-04T16:11:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9911373","created_at":"2026-07-04T16:11:55Z"},{"alias_kind":"pith_short_12","alias_value":"CVTWORXLR4E6","created_at":"2026-07-04T16:11:55Z"},{"alias_kind":"pith_short_16","alias_value":"CVTWORXLR4E6LDLU","created_at":"2026-07-04T16:11:55Z"},{"alias_kind":"pith_short_8","alias_value":"CVTWORXL","created_at":"2026-07-04T16:11:55Z"}],"graph_snapshots":[{"event_id":"sha256:2c641e3f8e5f9d05acb4b5cb0ec5716d2e015c93d8dfa7786a2ce42816796d9b","target":"graph","created_at":"2026-07-04T16:11:55Z","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/9911373/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With ASCA, we have detected three X-ray flares from the Class I protostar YLW15. The flares occurred every ~20 hours and showed an exponential decay with time constant 30-60 ks. The X-ray spectra are explained by a thin thermal plasma emission. The plasma temperature shows a fast-rise and slow-decay for each flare with kT_{peak}~4-6 keV. The emission measure of the plasma shows this time profile only for the first flare, and remains almost constant during the second and third flares at the level of the tail of the first flare. The peak flare luminosities L_{X,peak} were ~5-20 * 10^{31} erg s^{","authors_text":"Katsuji Koyama, Kensuke Imanishi, Nicolas Grosso, Thierry Montmerle, Yohko Tsuboi","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-11-19T19:28:38Z","title":"Quasi-periodic X-ray Flares from the Protostar YLW15"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9911373","kind":"arxiv","version":2},"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":"sha256:3fdd199ef625f731e2c59b741e47591cc2216128950da14c96ba47d5a2d265c4","target":"record","created_at":"2026-07-04T16:11:55Z","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":"e1a3fcd8899e1d00fe234609e0dde42d944f2426c1fb6b39f487a66187201de0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-11-19T19:28:38Z","title_canon_sha256":"a99eec22ebc35c43a91395e2aba37b3169b86f55fbf940421c516b5e78692da3"},"schema_version":"1.0","source":{"id":"astro-ph/9911373","kind":"arxiv","version":2}},"canonical_sha256":"15676746eb8f09e58d74b8a88658bfc2abe2e85c4fcf1459214ae3d72da5f30a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15676746eb8f09e58d74b8a88658bfc2abe2e85c4fcf1459214ae3d72da5f30a","first_computed_at":"2026-07-04T16:11:55.284297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:11:55.284297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zIWbIcxHjf062cmjFnXfL7kY8zjTaw45qKBGvyE8JujVufCZZyUIh+9/YvyyNhrXX90J7fnY2glXs3vs8PjVAw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:11:55.284717Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9911373","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3fdd199ef625f731e2c59b741e47591cc2216128950da14c96ba47d5a2d265c4","sha256:2c641e3f8e5f9d05acb4b5cb0ec5716d2e015c93d8dfa7786a2ce42816796d9b"],"state_sha256":"0f72f359ed0de61def3760917c8988259e0021572ee416136c75bba21b62c74e"}