{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:CZ6DZPXMW3OF72EHWV6TZI6RMW","short_pith_number":"pith:CZ6DZPXM","schema_version":"1.0","canonical_sha256":"167c3cbeecb6dc5fe887b57d3ca3d165b502b18c99d1763d965e80ec9b2a776a","source":{"kind":"arxiv","id":"1503.03181","version":1},"attestation_state":"computed","paper":{"title":"X-ray Fading and Expansion in the \"Miniature Supernova Remnant\" of GK Persei","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"D. Takei, H. Yamaguchi, J. J. Drake, P. Slane, S. Katsuda, Y. Uchiyama","submitted_at":"2015-03-11T05:34:33Z","abstract_excerpt":"We report on a second epoch of Chandra X-ray imaging spectroscopy of the spatially-resolved old nova remnant GK Persei. An ACIS-S3 observation of 97.4 ks was conducted in November 2013 after a lapse of 13.8 years from the last visit in 2000. The X-ray emitting nebula appeared more faint and patchy compared with the first epoch. The flux decline was particularly evident in fainter regions and the mean decline was 30-40 % in the 0.5-1.2 keV energy band. A typical expansion of the brightest part of the remnant was 1.9 arcsec, which corresponds to an expansion rate of 0.14 arcsec yr^{-1}. The soft"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1503.03181","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-11T05:34:33Z","cross_cats_sorted":[],"title_canon_sha256":"aa7c40035a0f44132631857a1596ae3ed5eb598ecd541847fe7e75371105722d","abstract_canon_sha256":"0973401bdb1dd3c09e4b9274100e3e91dcb0b1a5cc3d8e5986ec4b5574a37c2d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:52.462154Z","signature_b64":"p+EQ22PNRbKXkC2t4qp1sKRKxFLn3F8J42JbrH2bo3wepLTiXlJgWtGxQWqmOmhqXBsjF8WTKu8gydQbstOlBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"167c3cbeecb6dc5fe887b57d3ca3d165b502b18c99d1763d965e80ec9b2a776a","last_reissued_at":"2026-05-18T01:40:52.461596Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:52.461596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"X-ray Fading and Expansion in the \"Miniature Supernova Remnant\" of GK Persei","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"D. Takei, H. Yamaguchi, J. J. Drake, P. Slane, S. Katsuda, Y. Uchiyama","submitted_at":"2015-03-11T05:34:33Z","abstract_excerpt":"We report on a second epoch of Chandra X-ray imaging spectroscopy of the spatially-resolved old nova remnant GK Persei. An ACIS-S3 observation of 97.4 ks was conducted in November 2013 after a lapse of 13.8 years from the last visit in 2000. The X-ray emitting nebula appeared more faint and patchy compared with the first epoch. The flux decline was particularly evident in fainter regions and the mean decline was 30-40 % in the 0.5-1.2 keV energy band. A typical expansion of the brightest part of the remnant was 1.9 arcsec, which corresponds to an expansion rate of 0.14 arcsec yr^{-1}. The soft"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03181","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1503.03181","created_at":"2026-05-18T01:40:52.461701+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.03181v1","created_at":"2026-05-18T01:40:52.461701+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03181","created_at":"2026-05-18T01:40:52.461701+00:00"},{"alias_kind":"pith_short_12","alias_value":"CZ6DZPXMW3OF","created_at":"2026-05-18T12:29:17.054201+00:00"},{"alias_kind":"pith_short_16","alias_value":"CZ6DZPXMW3OF72EH","created_at":"2026-05-18T12:29:17.054201+00:00"},{"alias_kind":"pith_short_8","alias_value":"CZ6DZPXM","created_at":"2026-05-18T12:29:17.054201+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW","json":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW.json","graph_json":"https://pith.science/api/pith-number/CZ6DZPXMW3OF72EHWV6TZI6RMW/graph.json","events_json":"https://pith.science/api/pith-number/CZ6DZPXMW3OF72EHWV6TZI6RMW/events.json","paper":"https://pith.science/paper/CZ6DZPXM"},"agent_actions":{"view_html":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW","download_json":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW.json","view_paper":"https://pith.science/paper/CZ6DZPXM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.03181&json=true","fetch_graph":"https://pith.science/api/pith-number/CZ6DZPXMW3OF72EHWV6TZI6RMW/graph.json","fetch_events":"https://pith.science/api/pith-number/CZ6DZPXMW3OF72EHWV6TZI6RMW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW/action/storage_attestation","attest_author":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW/action/author_attestation","sign_citation":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW/action/citation_signature","submit_replication":"https://pith.science/pith/CZ6DZPXMW3OF72EHWV6TZI6RMW/action/replication_record"}},"created_at":"2026-05-18T01:40:52.461701+00:00","updated_at":"2026-05-18T01:40:52.461701+00:00"}