{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:5IA6LQ6372QSLTCCNHU4RR4QCL","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":"3d38ebeafa4e35e42c6b24a5281e388ebe79936ef51cc17461a4c9967dab7ce3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-01T19:23:07Z","title_canon_sha256":"ae7659f17040cf81a4ac202371417c8888633c9ba80ef4e086541be50dd238ab"},"schema_version":"1.0","source":{"id":"0803.0078","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0803.0078","created_at":"2026-05-18T02:16:00Z"},{"alias_kind":"arxiv_version","alias_value":"0803.0078v1","created_at":"2026-05-18T02:16:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0803.0078","created_at":"2026-05-18T02:16:00Z"},{"alias_kind":"pith_short_12","alias_value":"5IA6LQ6372QS","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"5IA6LQ6372QSLTCC","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"5IA6LQ63","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:f6bc6502678123bd50884f56eb4aaa3722d6938044c76a308fc8d2aefeceec9c","target":"graph","created_at":"2026-05-18T02:16:00Z","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":"Simultaneous observations of AKR emission using the four-spacecraft Cluster array were used to make the first direct measurements of the angular beaming patterns of individual bursts. By comparing the spacecraft locations and AKR burst locations, the angular beaming pattern was found to be narrowly confined to a plane containing the magnetic field vector at the source and tangent to a circle of constant latitude. Most rays paths are confined within 15 deg of this tangent plane, consistent with numerical simulations of AKR k-vector orientation at maximum growth rate. The emission is also strong","authors_text":"I. W. Christopher, J. S. Pickett, R. L. Mutel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-01T19:23:07Z","title":"Cluster Multi-spacecraft Determination of AKR Angular Beaming"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0803.0078","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":"sha256:7f7f62fa356a221e43fd076fc546153fe268361b4a775f5d0454468144f1ecdf","target":"record","created_at":"2026-05-18T02:16:00Z","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":"3d38ebeafa4e35e42c6b24a5281e388ebe79936ef51cc17461a4c9967dab7ce3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-03-01T19:23:07Z","title_canon_sha256":"ae7659f17040cf81a4ac202371417c8888633c9ba80ef4e086541be50dd238ab"},"schema_version":"1.0","source":{"id":"0803.0078","kind":"arxiv","version":1}},"canonical_sha256":"ea01e5c3dbfea125cc4269e9c8c79012e7e252896d6bdd4a96ff8860623d50f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea01e5c3dbfea125cc4269e9c8c79012e7e252896d6bdd4a96ff8860623d50f6","first_computed_at":"2026-05-18T02:16:00.687936Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:16:00.687936Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"evp5sz2SVR0wtUUQQWq+RY6/6j1J+qAl3y06V95MW96KtFxUj3doKttWkTcx/SHOVkFWN8xHlCKGTCQAoGYRAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:16:00.688352Z","signed_message":"canonical_sha256_bytes"},"source_id":"0803.0078","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f7f62fa356a221e43fd076fc546153fe268361b4a775f5d0454468144f1ecdf","sha256:f6bc6502678123bd50884f56eb4aaa3722d6938044c76a308fc8d2aefeceec9c"],"state_sha256":"4ced86a5744d300cb9c99f9f2b7ca0681cbcfc8379f5e5969b7861bfeba96101"}