{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:UYRKO7JGQ2BIACRSNMJNZMPV3W","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":"35ff68e2d557d2e759cdfa389c9c40411657d805df07eb647c864c31404f99e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-30T20:00:05Z","title_canon_sha256":"654bead1333dca98c6e04c5ad27609b1fa077d375e77981384f6ed88cfa8e623"},"schema_version":"1.0","source":{"id":"1307.8123","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.8123","created_at":"2026-05-18T01:48:32Z"},{"alias_kind":"arxiv_version","alias_value":"1307.8123v1","created_at":"2026-05-18T01:48:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.8123","created_at":"2026-05-18T01:48:32Z"},{"alias_kind":"pith_short_12","alias_value":"UYRKO7JGQ2BI","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"UYRKO7JGQ2BIACRS","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"UYRKO7JG","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:b763943eacbb80f1c2018bc5de65babc2e055f27774898adaf91e9d0f6b88bca","target":"graph","created_at":"2026-05-18T01:48:32Z","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":"The well-established Type Ia remnant of Tycho's supernova (SN 1572) reveals discrepant ambient medium density estimates based on either the measured dynamics or on the X-ray emission properties. This discrepancy can potentially be solved by assuming that the supernova remnant (SNR) shock initially moved through a stellar wind bubble, but is currently evolving in the uniform interstellar medium with a relatively low density.\n  We investigate this scenario by combining hydrodynamical simulations of the wind-loss phase and the supernova remnant evolution with a coupled X-ray emission model, which","authors_text":"A. Chiotellis, D. Kosenko, J.S. Kaastra, J. Vink, K.M. Schure","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-30T20:00:05Z","title":"Modeling the interaction of thermonuclear supernova remnants with circumstellar structures: The case of Tycho's supernova remnant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.8123","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:ecc718054d921316081b91e715abbdd54636466775db2db6dd9c8cac394ff725","target":"record","created_at":"2026-05-18T01:48:32Z","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":"35ff68e2d557d2e759cdfa389c9c40411657d805df07eb647c864c31404f99e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-30T20:00:05Z","title_canon_sha256":"654bead1333dca98c6e04c5ad27609b1fa077d375e77981384f6ed88cfa8e623"},"schema_version":"1.0","source":{"id":"1307.8123","kind":"arxiv","version":1}},"canonical_sha256":"a622a77d268682800a326b12dcb1f5dda6a1c1b48740d3583954d643343138bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a622a77d268682800a326b12dcb1f5dda6a1c1b48740d3583954d643343138bd","first_computed_at":"2026-05-18T01:48:32.608413Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:32.608413Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EEFXdiA5R80UoQWWqc2hkxIaZgjuk4eYsI8BdS51FUoJR/Mx/UyJZDcJb5kbTUSJB7sTePcUfM8tBw6dotQmAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:32.609014Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.8123","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecc718054d921316081b91e715abbdd54636466775db2db6dd9c8cac394ff725","sha256:b763943eacbb80f1c2018bc5de65babc2e055f27774898adaf91e9d0f6b88bca"],"state_sha256":"1b4a49c7317291a3a6141cdf20aae94858f1dca64e9cdd11ca7e94421d407fed"}