{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:6PERBZ6KD2X73LHWFTQEMIJEMO","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":"864072d299c94347b0b8c42f485724d331a935a7ad4886f116b74bad5fae4f87","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-25T22:24:40Z","title_canon_sha256":"54dae5af618697d5eaa071954529705011b0cc58441c8ba28dbfeaac995f0da6"},"schema_version":"1.0","source":{"id":"2308.13693","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.13693","created_at":"2026-07-05T06:45:03Z"},{"alias_kind":"arxiv_version","alias_value":"2308.13693v1","created_at":"2026-07-05T06:45:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.13693","created_at":"2026-07-05T06:45:03Z"},{"alias_kind":"pith_short_12","alias_value":"6PERBZ6KD2X7","created_at":"2026-07-05T06:45:03Z"},{"alias_kind":"pith_short_16","alias_value":"6PERBZ6KD2X73LHW","created_at":"2026-07-05T06:45:03Z"},{"alias_kind":"pith_short_8","alias_value":"6PERBZ6K","created_at":"2026-07-05T06:45:03Z"}],"graph_snapshots":[{"event_id":"sha256:6086dbe158a01040ae22cdba8525d47ff63b59b4edeca6256a9bb8e5f049e7fd","target":"graph","created_at":"2026-07-05T06:45:03Z","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/2308.13693/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Core-collapse explosions of massive stars leave behind neutron stars, with a known diversity that includes the \"Central Compact Objects\" (CCOs). Typified by the neutron star discovered near the centre of the Cas A supernova remnant (SNR), CCOs have been observed to shine only in X-rays. To address their supernova progenitors, we perform a systematic study of SNRs that contain a CCO and display X-ray emission from their shock-heated ejecta. We make use of X-ray data primarily using the Chandra X-ray observatory, complemented with XMM-Newton. This study uses a systematic approach to the analysis","authors_text":"Chelsea Braun, Chris Fryer, Ping Zhou, Samar Safi-Harb","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-25T22:24:40Z","title":"Progenitors and Explosion Properties of Supernova Remnants Hosting Central Compact Objects: II. A Global Systematic Study with a Comparison to Nucleosynthesis Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.13693","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":"sha256:4acebd8bfb64f7b37b15efea7798e8b5a2f49e6d8da68404ce5b0c17b0aaafed","target":"record","created_at":"2026-07-05T06:45:03Z","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":"864072d299c94347b0b8c42f485724d331a935a7ad4886f116b74bad5fae4f87","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-25T22:24:40Z","title_canon_sha256":"54dae5af618697d5eaa071954529705011b0cc58441c8ba28dbfeaac995f0da6"},"schema_version":"1.0","source":{"id":"2308.13693","kind":"arxiv","version":1}},"canonical_sha256":"f3c910e7ca1eaffdacf62ce046212463a1465f17f980a0c7f5848a00712c27e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3c910e7ca1eaffdacf62ce046212463a1465f17f980a0c7f5848a00712c27e8","first_computed_at":"2026-07-05T06:45:03.370110Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:45:03.370110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HS7Gt0R6EURkHmB0FgImNlMy9ubnA7+AkneKlUhBorsy7EDmffVYBKldpr6h8Z2yqQtuklcljAx/y0QVnhKzCA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:45:03.370541Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.13693","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4acebd8bfb64f7b37b15efea7798e8b5a2f49e6d8da68404ce5b0c17b0aaafed","sha256:6086dbe158a01040ae22cdba8525d47ff63b59b4edeca6256a9bb8e5f049e7fd"],"state_sha256":"a55dd8b8caacbe937aa5ade2bc80b82a173d1069b1159ca99b4cc590612339da"}