{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:EZ5YYPSV2AK3TW3USYWPXGZEYZ","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":"6ab93360b745a51b875ff7318dd4f49dfd91bae781cdd04bef11a406b9b9cb72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-04T11:19:31Z","title_canon_sha256":"0da83b16998e5bfe1f4b9342b5b0aa4ca42d9e2f76d0236a094ce4f2ecec85c7"},"schema_version":"1.0","source":{"id":"1806.01046","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.01046","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"arxiv_version","alias_value":"1806.01046v1","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.01046","created_at":"2026-05-18T00:07:40Z"},{"alias_kind":"pith_short_12","alias_value":"EZ5YYPSV2AK3","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EZ5YYPSV2AK3TW3U","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EZ5YYPSV","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:4c17d0286faad803fcdcd7292b9c6e2a19cb3dc08cbb8254ab089ae1e5b37fbd","target":"graph","created_at":"2026-05-18T00:07:40Z","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":"Solar radio emission features a large number of fine structures demonstrating great variability in frequency and time. We present spatially resolved spectral radio observations of type IIIb bursts in the $30-80$ MHz range made by the Low Frequency Array (LOFAR). The bursts show well-defined fine frequency structuring called \"stria\" bursts. The spatial characteristics of the stria sources are determined by the propagation effects of radio waves; their movement and expansion speeds are in the range of 0.1-0.6c. Analysis of the dynamic spectra reveals that both the spectral bandwidth and the freq","authors_text":"A.A. Kuznetsov, E.P. Kontar, I.N. Sharykin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-04T11:19:31Z","title":"LOFAR observations of fine spectral structure dynamics in type IIIb radio bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.01046","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:d896e7888018b8d49ee37b84a51b3a9ddde71d80b4ad728e46f2b4f09f2e60c1","target":"record","created_at":"2026-05-18T00:07:40Z","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":"6ab93360b745a51b875ff7318dd4f49dfd91bae781cdd04bef11a406b9b9cb72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-04T11:19:31Z","title_canon_sha256":"0da83b16998e5bfe1f4b9342b5b0aa4ca42d9e2f76d0236a094ce4f2ecec85c7"},"schema_version":"1.0","source":{"id":"1806.01046","kind":"arxiv","version":1}},"canonical_sha256":"267b8c3e55d015b9db74962cfb9b24c665d07d3c6b9351c99545ac2a0eec7682","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"267b8c3e55d015b9db74962cfb9b24c665d07d3c6b9351c99545ac2a0eec7682","first_computed_at":"2026-05-18T00:07:40.271607Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:40.271607Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"esjJQLOdfKRTT7XNRclba2tq2lkNlHaZH9lWuiE14TKL/DNXHbeu05qbPCkR1rVe5OPzb1NOO8UudeoBULYBDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:40.272307Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.01046","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d896e7888018b8d49ee37b84a51b3a9ddde71d80b4ad728e46f2b4f09f2e60c1","sha256:4c17d0286faad803fcdcd7292b9c6e2a19cb3dc08cbb8254ab089ae1e5b37fbd"],"state_sha256":"a999ec9d70b13c5119da92978f1dfb37eebd7e1f133e21f4c6abd4384a96adbd"}