{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:T5N2WUTSM5X56W2FAGUTPAKANU","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":"7468dea25e711558ccef4738c935d5101595cfe13baa5f5d32755dc09fedb497","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-27T03:54:09Z","title_canon_sha256":"6f8c747bafc55edfe18d64b822508ddad5c5f94e34ff40de4e5da9191881af86"},"schema_version":"1.0","source":{"id":"1208.5287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5287","created_at":"2026-05-18T01:54:58Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5287v1","created_at":"2026-05-18T01:54:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5287","created_at":"2026-05-18T01:54:58Z"},{"alias_kind":"pith_short_12","alias_value":"T5N2WUTSM5X5","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"T5N2WUTSM5X56W2F","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"T5N2WUTS","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:9e23c16dbb134413136534796a85cef8501d14bee547448bc37f2f2d9a75a2eb","target":"graph","created_at":"2026-05-18T01:54:58Z","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":"We report polarization measurements in two prompt emissions of gamma-ray bursts, GRB 110301A and GRB 110721A, observed with the Gamma-ray burst polarimeter (GAP) aboard IKAROS solar sail mission. We detected linear polarization signals from each burst with polarization degree of $\\Pi = 70 \\pm 22$% with statistical significance of $3.7 \\sigma$ for GRB 110301A, and $\\Pi = 84^{+16}_{-28}$% with $3.3 \\sigma$ confidence level for GRB 110721A. We did not detect any significant change of polarization angle. These two events had shorter durations and dimmer brightness compared with GRB 100826A, which ","authors_text":"Daisuke Yonetoku, Hajime Yonemochi, Hirofumi Fujimoto, Kenji Toma, Noriyuki Toukairin, Shuichi Gunji, Takuya Takahashi, Tatehiro Mihara, Tomonori Sakashita, Toshio Murakami, Yoshiki Kodama, Yoshiyuki Morihara, Yudai Wakashima","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-27T03:54:09Z","title":"Magnetic Structures in Gamma-Ray Burst Jets Probed by Gamma-Ray Polarization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5287","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":"sha256:10f406ec6f1f0d79cf4fb9dfd30aa420bf42e36b5795a18243eac8521028aa20","target":"record","created_at":"2026-05-18T01:54:58Z","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":"7468dea25e711558ccef4738c935d5101595cfe13baa5f5d32755dc09fedb497","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-27T03:54:09Z","title_canon_sha256":"6f8c747bafc55edfe18d64b822508ddad5c5f94e34ff40de4e5da9191881af86"},"schema_version":"1.0","source":{"id":"1208.5287","kind":"arxiv","version":1}},"canonical_sha256":"9f5bab5272676fdf5b4501a93781406d2875d1ada99f59641fdd169ab87a506e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f5bab5272676fdf5b4501a93781406d2875d1ada99f59641fdd169ab87a506e","first_computed_at":"2026-05-18T01:54:58.009476Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:58.009476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z1HNZvTTIYoPobBmpqYnhcC87NyNf66CEUOHXI4aeYgjTW113v8GVhz4QotTA60d3j7gvjObNnA7Zjfu/WJADQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:58.010109Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10f406ec6f1f0d79cf4fb9dfd30aa420bf42e36b5795a18243eac8521028aa20","sha256:9e23c16dbb134413136534796a85cef8501d14bee547448bc37f2f2d9a75a2eb"],"state_sha256":"01bb22b9351c85a5df127bf163011ada2cdf4a247192aec22dbf5e51d7f6c2f9"}