{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:7ILK7WVPNM4PSWLOSFZ5LYSPSE","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":"1b8ce65e42cfb7e193a3ff6ead1d01325ae8088898f1b3b0af731011d1f3014d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-24T14:42:11Z","title_canon_sha256":"5a31253b1b488bd0923a9541ea6f010f0f282320e979277e1f4e9440cbcdabd3"},"schema_version":"1.0","source":{"id":"0911.4636","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.4636","created_at":"2026-05-18T02:34:03Z"},{"alias_kind":"arxiv_version","alias_value":"0911.4636v2","created_at":"2026-05-18T02:34:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.4636","created_at":"2026-05-18T02:34:03Z"},{"alias_kind":"pith_short_12","alias_value":"7ILK7WVPNM4P","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"7ILK7WVPNM4PSWLO","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"7ILK7WVP","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:93955e0c62d1dbc477a1084dfa34b02e189950f393321f989a5f404175bbd80e","target":"graph","created_at":"2026-05-18T02:34:03Z","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":"SGR J1550-5418 (previously known as AXP 1E 1547.0-5408 or PSR J1550-5418) went into three active bursting episodes in 2008 October and in 2009 January and March, emitting hundreds of typical Soft Gamma Repeater (SGR) bursts in soft gamma-rays. The second episode was especially intense, and our untriggered burst search on Fermi/GBM data (8-1000 keV) revealed ~450 bursts emitted over 24 hours during the peak of this activity. Using the GBM data, we identified a ~150-s-long enhanced persistent emission during 2009 January 22 that exhibited intriguing timing and spectral properties: (i) clear puls","authors_text":"A.J. van der Horst, A.L. Watts, A. Pe'er, A. von Kienlin, C.A. Wilson-Hodge, C. Kouveliotou, E. Gogus, E. Ramirez-Ruiz, J. Granot, M.H. Finger, M. van der Klis, N. Gehrels, P.M. Woods, S. Wachter, Y. Kaneko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-24T14:42:11Z","title":"Magnetar Twists: Fermi/Gamma ray Burst Monitor (GBM) detection of SGR J1550-5418"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.4636","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":"sha256:67a8609b569c55b844614f6fa8dfd050ef9e5811e88f487001b654652ec68d87","target":"record","created_at":"2026-05-18T02:34:03Z","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":"1b8ce65e42cfb7e193a3ff6ead1d01325ae8088898f1b3b0af731011d1f3014d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-24T14:42:11Z","title_canon_sha256":"5a31253b1b488bd0923a9541ea6f010f0f282320e979277e1f4e9440cbcdabd3"},"schema_version":"1.0","source":{"id":"0911.4636","kind":"arxiv","version":2}},"canonical_sha256":"fa16afdaaf6b38f9596e9173d5e24f9126e0d9435c7b2d573fcd8fbabd5d4192","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa16afdaaf6b38f9596e9173d5e24f9126e0d9435c7b2d573fcd8fbabd5d4192","first_computed_at":"2026-05-18T02:34:03.787814Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:03.787814Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ojA5tgIFzP04aGKyoR8/Yz+jCkGtaDNiaRFErcFClWYSBM9GdGXnYD++ll5xpx8HOkBTckOEVVcfJ9CqUCYPCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:03.788393Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.4636","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67a8609b569c55b844614f6fa8dfd050ef9e5811e88f487001b654652ec68d87","sha256:93955e0c62d1dbc477a1084dfa34b02e189950f393321f989a5f404175bbd80e"],"state_sha256":"ef044357c7b5cf165826c698d5b821d50a775ea897f9a0079ee314ab53629049"}