{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:NPAZ5DNB2IVEI2IBZN4Q3QP5Q2","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":"42e6f5000be18fde80357fe9849880ea85ed6dd51efc19f735aac92a991fb27e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-16T19:50:21Z","title_canon_sha256":"41a98676c1af6ccb1c503b6ac9bde8b6e7e7972ffd6dd5767686602135289454"},"schema_version":"1.0","source":{"id":"1208.3455","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.3455","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"arxiv_version","alias_value":"1208.3455v4","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3455","created_at":"2026-05-18T03:43:41Z"},{"alias_kind":"pith_short_12","alias_value":"NPAZ5DNB2IVE","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NPAZ5DNB2IVEI2IB","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NPAZ5DNB","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:afa1e64abb43a075151e53d6eb56f34b9f1948aaec73452633ca849be0ff8094","target":"graph","created_at":"2026-05-18T03:43:41Z","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":"In this paper we present the results of the radio light curve and X-ray observations of broad-lined Type Ic SN 2007bg. The light curve shows three distinct phases of spectral and temporal evolution, implying that the SNe shock likely encountered at least 3 different circumstellar medium regimes. We interpret this as the progenitor of SN 2007bg having at least two distinct mass-loss episodes (i.e., phases 1 and 3) during its final stages of evolution, yielding a highly-stratified circumstellar medium. Modelling the phase 1 light curve as a freely-expanding, synchrotron-emitting shell, self-abso","authors_text":"C. Stockdale, F. E. Bauer, J. L. Prieto, P. Salas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-16T19:50:21Z","title":"SN 2007bg: The Complex Circumstellar Environment Around One of the Most Radio-Luminous Broad-Lined Type Ic Supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3455","kind":"arxiv","version":4},"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":"sha256:950ae2f520866604ae30de075f4a8918f93ba0632fbc009d32ec5397f8dade85","target":"record","created_at":"2026-05-18T03:43:41Z","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":"42e6f5000be18fde80357fe9849880ea85ed6dd51efc19f735aac92a991fb27e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-16T19:50:21Z","title_canon_sha256":"41a98676c1af6ccb1c503b6ac9bde8b6e7e7972ffd6dd5767686602135289454"},"schema_version":"1.0","source":{"id":"1208.3455","kind":"arxiv","version":4}},"canonical_sha256":"6bc19e8da1d22a446901cb790dc1fd8682449fb12817dede5b19304c85d04022","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6bc19e8da1d22a446901cb790dc1fd8682449fb12817dede5b19304c85d04022","first_computed_at":"2026-05-18T03:43:41.853993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:41.853993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4hHvofkLDiTX4/hfi5bctZvHa7JMMTw8Ad0zNwD9RjJ8x8UDGZzA1hlsJM/MyNnphVX+Ohnwj45auJm9GneuBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:41.854528Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.3455","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:950ae2f520866604ae30de075f4a8918f93ba0632fbc009d32ec5397f8dade85","sha256:afa1e64abb43a075151e53d6eb56f34b9f1948aaec73452633ca849be0ff8094"],"state_sha256":"ed159ec3076331e6a6e9f739b2023a99d27752a4709caf10d211c532ab37c789"}