{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:LLIBGXHTZYBOBBYTZVYEASBWRF","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":"dcc5fec48ed839e8132e1e40bbbd7441586a9bb37d6cd049f303aac70a4c878f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-20T18:00:01Z","title_canon_sha256":"6a2b03b0a861a4cd0511fb1b578d72b5d9c703f3cb26aa7c9e302faaf141ed14"},"schema_version":"1.0","source":{"id":"2004.09519","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.09519","created_at":"2026-07-05T01:10:36Z"},{"alias_kind":"arxiv_version","alias_value":"2004.09519v2","created_at":"2026-07-05T01:10:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.09519","created_at":"2026-07-05T01:10:36Z"},{"alias_kind":"pith_short_12","alias_value":"LLIBGXHTZYBO","created_at":"2026-07-05T01:10:36Z"},{"alias_kind":"pith_short_16","alias_value":"LLIBGXHTZYBOBBYT","created_at":"2026-07-05T01:10:36Z"},{"alias_kind":"pith_short_8","alias_value":"LLIBGXHT","created_at":"2026-07-05T01:10:36Z"}],"graph_snapshots":[{"event_id":"sha256:670ea0e35b4365e8e332804c25883b423d7fccfe19a0b737a061835bf412c5ce","target":"graph","created_at":"2026-07-05T01:10:36Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.09519/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The first electromagnetic signal from a supernova (SN) is released when the shock crosses the progenitor surface. This shock breakout (SBO) emission provides constraints on progenitor and explosion properties. Observationally, SBOs appear as minute to hour-long extragalactic X-ray transients. They are challenging to detect and only one SBO has been observed to date. Here, we search the XMM-Newton archive and find twelve new SN SBO candidates. We identify host galaxies to nine of these at estimated redshifts of 0.1-1. The SBO candidates have energies of ${\\sim}10^{46}$ erg, timescales of 30-300","authors_text":"Dennis Alp, Josefin Larsson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-20T18:00:01Z","title":"Blasts from the Past: Supernova Shock Breakouts among X-Ray Transients in the XMM-Newton Archive"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.09519","kind":"arxiv","version":2},"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":"sha256:5fee43509673c8faca9d5c5c28f5b01ddff0125dfa5ac186aac2b90685769cfe","target":"record","created_at":"2026-07-05T01:10:36Z","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":"dcc5fec48ed839e8132e1e40bbbd7441586a9bb37d6cd049f303aac70a4c878f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-20T18:00:01Z","title_canon_sha256":"6a2b03b0a861a4cd0511fb1b578d72b5d9c703f3cb26aa7c9e302faaf141ed14"},"schema_version":"1.0","source":{"id":"2004.09519","kind":"arxiv","version":2}},"canonical_sha256":"5ad0135cf3ce02e08713cd704048368971a77ef78413ce69eb63b36423e9db42","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ad0135cf3ce02e08713cd704048368971a77ef78413ce69eb63b36423e9db42","first_computed_at":"2026-07-05T01:10:36.340135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:10:36.340135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yhyz5p9BysDVPhaW86TsUTewuuNa23cIBQAb/cV60arvLSa/nlalUzCW+8I+ZUdkV7Ojdx3zys2rGNsQZeJ6AA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:10:36.340751Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.09519","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fee43509673c8faca9d5c5c28f5b01ddff0125dfa5ac186aac2b90685769cfe","sha256:670ea0e35b4365e8e332804c25883b423d7fccfe19a0b737a061835bf412c5ce"],"state_sha256":"9285c18d0b9d5de35b9aa4c00a91913f3108b140a4c401a6e648a00df87c94b1"}