{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:C5MAHO4OQUI27OP3PP5YGSZK7U","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":"af7245c53e995267bd086ae12979d5f6337405440b0ab7f3eadb965a78ea49d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-18T10:50:17Z","title_canon_sha256":"46fdee672db7c1cdcdfa3eb7db6aecd83fc92966c61970e94dcdafa51360c5ad"},"schema_version":"1.0","source":{"id":"1310.4968","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.4968","created_at":"2026-05-18T01:46:57Z"},{"alias_kind":"arxiv_version","alias_value":"1310.4968v1","created_at":"2026-05-18T01:46:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.4968","created_at":"2026-05-18T01:46:57Z"},{"alias_kind":"pith_short_12","alias_value":"C5MAHO4OQUI2","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"C5MAHO4OQUI27OP3","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"C5MAHO4O","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:cafa2fed487e5e3f2d9864e57211f876ad158feddc84c36b360af45941c62932","target":"graph","created_at":"2026-05-18T01:46:57Z","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":"As the remnant of Supernova (SN) 1987A has been getting brighter over time, new observations at high frequencies have allowed imaging of the radio emission at unprecedented detail. We present a new radio image at 44 GHz of the supernova remnant (SNR), derived from observations performed with the Australia Telescope Compact Array (ATCA) in 2011. The diffraction-limited image has a resolution of $349\\times225$ mas, which is the highest achieved to date in high-dynamic range images of the SNR. We also present a new image at 18 GHz, also derived from ATCA observations performed in 2011, which is s","authors_text":"A. K. Tzioumis, B. M. Gaensler, C. -Y. Ng, G. Zanardo, L. Staveley-Smith, R. N. Manchester, T. M. Potter","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-18T10:50:17Z","title":"The radio remnant of Supernova 1987A at high frequencies and high resolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.4968","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":"sha256:7a5d03788c76186910269c846ca96b2f3af032bd9a0ce216173f941782902af5","target":"record","created_at":"2026-05-18T01:46:57Z","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":"af7245c53e995267bd086ae12979d5f6337405440b0ab7f3eadb965a78ea49d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-18T10:50:17Z","title_canon_sha256":"46fdee672db7c1cdcdfa3eb7db6aecd83fc92966c61970e94dcdafa51360c5ad"},"schema_version":"1.0","source":{"id":"1310.4968","kind":"arxiv","version":1}},"canonical_sha256":"175803bb8e8511afb9fb7bfb834b2afd279fab9cc9c8575894042c3fda061b18","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"175803bb8e8511afb9fb7bfb834b2afd279fab9cc9c8575894042c3fda061b18","first_computed_at":"2026-05-18T01:46:57.988218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:57.988218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IDNnlnZS8tyvXiwZHOnUw1hxOA9rT5MrXruIJu7xqw+8rTiRybV7ZHWQXV0e9T3VH6W625szTFo/BvMUx55aAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:57.988911Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.4968","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7a5d03788c76186910269c846ca96b2f3af032bd9a0ce216173f941782902af5","sha256:cafa2fed487e5e3f2d9864e57211f876ad158feddc84c36b360af45941c62932"],"state_sha256":"f56a3e7de0030bb90dd5fc41da18239f90c27a13bbeac153cf5e66cfede2ea94"}