{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ARTKPCRFD3ZAVJ2IWVZYI3IYBU","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":"4cd73e8388bac726a5d10f7799066cdf198a677915bcf168eac8f67ea20db029","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-02-12T11:14:12Z","title_canon_sha256":"4f01602bfe220ee0056a6bdf2ad83ee2a2a0facd1c3c127ac3210a3da95a0a14"},"schema_version":"1.0","source":{"id":"2302.05893","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.05893","created_at":"2026-07-05T05:40:59Z"},{"alias_kind":"arxiv_version","alias_value":"2302.05893v1","created_at":"2026-07-05T05:40:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.05893","created_at":"2026-07-05T05:40:59Z"},{"alias_kind":"pith_short_12","alias_value":"ARTKPCRFD3ZA","created_at":"2026-07-05T05:40:59Z"},{"alias_kind":"pith_short_16","alias_value":"ARTKPCRFD3ZAVJ2I","created_at":"2026-07-05T05:40:59Z"},{"alias_kind":"pith_short_8","alias_value":"ARTKPCRF","created_at":"2026-07-05T05:40:59Z"}],"graph_snapshots":[{"event_id":"sha256:c3d6369e82c4de2666213dce1bd25107fd2b8a3b08ddbb090614a796a0738871","target":"graph","created_at":"2026-07-05T05:40:59Z","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/2302.05893/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Only three of the dozen central compact objects (CCOs) in supernova remnants (SNRs) show thermal X-ray pulsations due to non-uniform surface temperature (hot-spots). The absence of X-ray pulsations from several unpulsed CCOs has motivated suggestions that they have uniform-temperature carbon atmospheres (UTCAs), which adequately fit their spectra with appropriate neutron star (NS) surface areas. This is in contrast to the two-temperature blackbody or hydrogen atmospheres that also fit well. Here we investigate the applicability of UTCAs to CCOs. We show the following: (i) The phase-averaged sp","authors_text":"J. A. J. Alford, J. P. Halpern","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-02-12T11:14:12Z","title":"Do Central Compact Objects have Carbon Atmospheres?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.05893","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":"sha256:89b9ecc495747fa06721cc0b50f6acbd1c9417ba95e72fd2094f7a8c434efe9e","target":"record","created_at":"2026-07-05T05:40:59Z","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":"4cd73e8388bac726a5d10f7799066cdf198a677915bcf168eac8f67ea20db029","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-02-12T11:14:12Z","title_canon_sha256":"4f01602bfe220ee0056a6bdf2ad83ee2a2a0facd1c3c127ac3210a3da95a0a14"},"schema_version":"1.0","source":{"id":"2302.05893","kind":"arxiv","version":1}},"canonical_sha256":"0466a78a251ef20aa748b573846d180d0c1115e77d15998e053e1f5def842bca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0466a78a251ef20aa748b573846d180d0c1115e77d15998e053e1f5def842bca","first_computed_at":"2026-07-05T05:40:59.551687Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:40:59.551687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CfTJyQzlOuO3Dih0mriWp7uOzlndl91e1V4cGn+8fwepEJCBoAzca0aJYWC3EA3ag1BU6GMTuyucvfL4WyfEAA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:40:59.552093Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.05893","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89b9ecc495747fa06721cc0b50f6acbd1c9417ba95e72fd2094f7a8c434efe9e","sha256:c3d6369e82c4de2666213dce1bd25107fd2b8a3b08ddbb090614a796a0738871"],"state_sha256":"0e4b29d004ed939e81a44df759dee156b5aa1fa18ca3c063fd039e26e6b7c388"}