{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:K4EBQPY6UATQ2ZHWWOP52DMXNN","short_pith_number":"pith:K4EBQPY6","canonical_record":{"source":{"id":"astro-ph/0508206","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-08-09T14:46:36Z","cross_cats_sorted":[],"title_canon_sha256":"f8ef2c2697fb0228722009335add098803b3c68e3ab681e2b6fb7c8f2e3d78d3","abstract_canon_sha256":"f52185ad96f26c61a7645f626bfcfa133821817ea28b71a4f85eb07855f9e3e7"},"schema_version":"1.0"},"canonical_sha256":"5708183f1ea0270d64f6b39fdd0d976b42fd217500dffcd4dda1cca61cd7e332","source":{"kind":"arxiv","id":"astro-ph/0508206","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0508206","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0508206v1","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0508206","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"pith_short_12","alias_value":"K4EBQPY6UATQ","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"pith_short_16","alias_value":"K4EBQPY6UATQ2ZHW","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"pith_short_8","alias_value":"K4EBQPY6","created_at":"2026-07-04T17:14:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:K4EBQPY6UATQ2ZHWWOP52DMXNN","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0508206","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-08-09T14:46:36Z","cross_cats_sorted":[],"title_canon_sha256":"f8ef2c2697fb0228722009335add098803b3c68e3ab681e2b6fb7c8f2e3d78d3","abstract_canon_sha256":"f52185ad96f26c61a7645f626bfcfa133821817ea28b71a4f85eb07855f9e3e7"},"schema_version":"1.0"},"canonical_sha256":"5708183f1ea0270d64f6b39fdd0d976b42fd217500dffcd4dda1cca61cd7e332","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:14:59.482804Z","signature_b64":"L2EMMDu7hUJpi+d4QaUKgqxvVuwhn8bIiBToUJMBMdv5Gh1C6sWJeYiRjAEaQbLpaNbU8VDDDMnvcAQQp8fCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5708183f1ea0270d64f6b39fdd0d976b42fd217500dffcd4dda1cca61cd7e332","last_reissued_at":"2026-07-04T17:14:59.482396Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:14:59.482396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0508206","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:14:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T8OD7kjp1mhw0ItbT7+nF77t4WbhKfOlSBB/HewrhyycHIG+rzzd8A5t+Qh88d0qLxOVNB257UoGVPboUGdQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:25:00.246362Z"},"content_sha256":"04dd68ec6006ac4cb81f0410f54ca417a2cd72cf06d2d30dea3fae08eae254ed","schema_version":"1.0","event_id":"sha256:04dd68ec6006ac4cb81f0410f54ca417a2cd72cf06d2d30dea3fae08eae254ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:K4EBQPY6UATQ2ZHWWOP52DMXNN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of Fast X-ray Oscillations During the 1998 Giant Flare from SGR 1900+14","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Anna L. Watts, Tod E. Strohmayer","submitted_at":"2005-08-09T14:46:36Z","abstract_excerpt":"We report the discovery of complex high frequency variability during the August 27, 1998 giant flare from SGR 1900+14 using the Rossi X-ray Timing Explorer (RXTE). We detect an 84 Hz oscillation (QPO) during a 1 s interval beginning approximately 1 min after the initial hard spike. The modulation amplitude is energy dependent, reaching a maximum of 26% (rms) for photons above 30 keV, and is not detected below 11 keV, with a 90% confidence upper limit of 14% (rms). Remarkably, additional QPOs are detected in the average power spectrum of data segments centered on the rotational phase at which t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0508206","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0508206/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:14:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3LRbZ2eIHaRb4cHOTtKieFo27Bobi3VotGuAtvy3y5lnlZ8e89s9QswgopAVq5DGhYcx5nKqXbrNHmX8kk+uAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:25:00.247024Z"},"content_sha256":"5ba99d488a5ea9bf354e431feaffd2959b67b82d9791d4b6dfea4c7f2656ca64","schema_version":"1.0","event_id":"sha256:5ba99d488a5ea9bf354e431feaffd2959b67b82d9791d4b6dfea4c7f2656ca64"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN/bundle.json","state_url":"https://pith.science/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-13T16:25:00Z","links":{"resolver":"https://pith.science/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN","bundle":"https://pith.science/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN/bundle.json","state":"https://pith.science/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K4EBQPY6UATQ2ZHWWOP52DMXNN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:K4EBQPY6UATQ2ZHWWOP52DMXNN","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":"f52185ad96f26c61a7645f626bfcfa133821817ea28b71a4f85eb07855f9e3e7","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-08-09T14:46:36Z","title_canon_sha256":"f8ef2c2697fb0228722009335add098803b3c68e3ab681e2b6fb7c8f2e3d78d3"},"schema_version":"1.0","source":{"id":"astro-ph/0508206","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0508206","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0508206v1","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0508206","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"pith_short_12","alias_value":"K4EBQPY6UATQ","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"pith_short_16","alias_value":"K4EBQPY6UATQ2ZHW","created_at":"2026-07-04T17:14:59Z"},{"alias_kind":"pith_short_8","alias_value":"K4EBQPY6","created_at":"2026-07-04T17:14:59Z"}],"graph_snapshots":[{"event_id":"sha256:5ba99d488a5ea9bf354e431feaffd2959b67b82d9791d4b6dfea4c7f2656ca64","target":"graph","created_at":"2026-07-04T17:14:59Z","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/0508206/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the discovery of complex high frequency variability during the August 27, 1998 giant flare from SGR 1900+14 using the Rossi X-ray Timing Explorer (RXTE). We detect an 84 Hz oscillation (QPO) during a 1 s interval beginning approximately 1 min after the initial hard spike. The modulation amplitude is energy dependent, reaching a maximum of 26% (rms) for photons above 30 keV, and is not detected below 11 keV, with a 90% confidence upper limit of 14% (rms). Remarkably, additional QPOs are detected in the average power spectrum of data segments centered on the rotational phase at which t","authors_text":"Anna L. Watts, Tod E. Strohmayer","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-08-09T14:46:36Z","title":"Discovery of Fast X-ray Oscillations During the 1998 Giant Flare from SGR 1900+14"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0508206","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":"sha256:04dd68ec6006ac4cb81f0410f54ca417a2cd72cf06d2d30dea3fae08eae254ed","target":"record","created_at":"2026-07-04T17:14:59Z","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":"f52185ad96f26c61a7645f626bfcfa133821817ea28b71a4f85eb07855f9e3e7","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-08-09T14:46:36Z","title_canon_sha256":"f8ef2c2697fb0228722009335add098803b3c68e3ab681e2b6fb7c8f2e3d78d3"},"schema_version":"1.0","source":{"id":"astro-ph/0508206","kind":"arxiv","version":1}},"canonical_sha256":"5708183f1ea0270d64f6b39fdd0d976b42fd217500dffcd4dda1cca61cd7e332","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5708183f1ea0270d64f6b39fdd0d976b42fd217500dffcd4dda1cca61cd7e332","first_computed_at":"2026-07-04T17:14:59.482396Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:14:59.482396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L2EMMDu7hUJpi+d4QaUKgqxvVuwhn8bIiBToUJMBMdv5Gh1C6sWJeYiRjAEaQbLpaNbU8VDDDMnvcAQQp8fCDA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:14:59.482804Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0508206","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04dd68ec6006ac4cb81f0410f54ca417a2cd72cf06d2d30dea3fae08eae254ed","sha256:5ba99d488a5ea9bf354e431feaffd2959b67b82d9791d4b6dfea4c7f2656ca64"],"state_sha256":"ab9875eb030dacb894d0da84ff63fae0ed4105a3779140cf3f3c4d67fc90ee4b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1psnM5u6NkhAW7PBD26jOQr1UIf4xsGUhKNyLKvWk9A1Iv4FMx144GAK5f4tSEloon8XRghgCbsB0+qaXH9qDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T16:25:00.254305Z","bundle_sha256":"82c84afa8e72a51f67aceed5ff55b20584c93d0da8130d5977a2693f38533a3c"}}