{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ZIZPZF2BQXDX4CCEEGJ7GVZ4EV","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":"c95ef0f44b96fdf0d40c366b515ca3244a6b4d0220998b2b2f144580066eaf61","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T04:29:22Z","title_canon_sha256":"6e7e9775d3098fbd3009cc4effd8c2c93b501a5d2b4a660905878e5d9e040854"},"schema_version":"1.0","source":{"id":"2502.15200","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.15200","created_at":"2026-07-05T11:38:04Z"},{"alias_kind":"arxiv_version","alias_value":"2502.15200v2","created_at":"2026-07-05T11:38:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.15200","created_at":"2026-07-05T11:38:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZIZPZF2BQXDX","created_at":"2026-07-05T11:38:04Z"},{"alias_kind":"pith_short_16","alias_value":"ZIZPZF2BQXDX4CCE","created_at":"2026-07-05T11:38:04Z"},{"alias_kind":"pith_short_8","alias_value":"ZIZPZF2B","created_at":"2026-07-05T11:38:04Z"}],"graph_snapshots":[{"event_id":"sha256:6d5bd5912080cf18754f1ad599546d2557838da7b8723aa4c9709ca6c167c3fe","target":"graph","created_at":"2026-07-05T11:38:04Z","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/2502.15200/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on Green Bank Telescope observations of the radio magnetar Swift J1818.0--1607 between 820 MHz and 35 GHz, taken from six to nine months after its 2020 March outburst. We obtained multi-hour observations at six frequencies, recording polarimetric, spectral, and single-pulse information. The spectrum peaks at a frequency of $5.4 \\pm 0.6$ GHz, making Swift J1818.0--1607 one of many radio magnetars which exhibit a gigahertz-peaked spectrum (GPS). The radio flux decays steeply above the peak frequency, with in-band spectral indices $\\alpha < -2.3 $ above 9 GHz. The emission is highly ($>","authors_text":"Evan F. Lewis, Harsha Blumer, Maura A. McLaughlin, Ryan S. Lynch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T04:29:22Z","title":"Multifrequency Radio Observations of the Magnetar Swift J1818.0--1607"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.15200","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":"sha256:323de3a8836574e1b89b9311107b8e376f7040853f226b2ef5f902b42c8e94d7","target":"record","created_at":"2026-07-05T11:38:04Z","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":"c95ef0f44b96fdf0d40c366b515ca3244a6b4d0220998b2b2f144580066eaf61","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T04:29:22Z","title_canon_sha256":"6e7e9775d3098fbd3009cc4effd8c2c93b501a5d2b4a660905878e5d9e040854"},"schema_version":"1.0","source":{"id":"2502.15200","kind":"arxiv","version":2}},"canonical_sha256":"ca32fc974185c77e08442193f3573c2575b2e9110fef0561f549766988baaa7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca32fc974185c77e08442193f3573c2575b2e9110fef0561f549766988baaa7b","first_computed_at":"2026-07-05T11:38:04.921283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:38:04.921283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qUp/m2Qm6yCPlfaEAgS8a1/MjtYjSxdwPFzL3ElG0PvxMGN7n2CwVvL4QIUmRDUO9TdVfiKL/oRFAhNWUIktCA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:38:04.921775Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.15200","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:323de3a8836574e1b89b9311107b8e376f7040853f226b2ef5f902b42c8e94d7","sha256:6d5bd5912080cf18754f1ad599546d2557838da7b8723aa4c9709ca6c167c3fe"],"state_sha256":"95939bb1dec67cbb5cb0a6aee145a9843bcf81065e69f90140a7abdb114dfd84"}