{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WJXRONWJB77GLX2HKQKTC7WDRX","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":"e6f99fc74ed741e9b73093f2da5e7910d3949913e86f44d5c20b41643060e5d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-05-03T14:18:16Z","title_canon_sha256":"a5b6fa3989c196e86bfbd1cb4ee7ba673322c83d9b03cb2b82cd3c78ae57d65e"},"schema_version":"1.0","source":{"id":"1105.0590","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0590","created_at":"2026-05-18T02:02:09Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0590v1","created_at":"2026-05-18T02:02:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0590","created_at":"2026-05-18T02:02:09Z"},{"alias_kind":"pith_short_12","alias_value":"WJXRONWJB77G","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WJXRONWJB77GLX2H","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WJXRONWJ","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:a37edbf8e1059c8bc6abe77de5a558dec214a80367b0c1d6fa89e224a16992fe","target":"graph","created_at":"2026-05-18T02:02:09Z","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":"For the He/N nova M31N 2007-12b, we analyzed XMM-Newton EPIC and Chandra HRC-I observations of our monitoring program performed at intervals of ten days and added results of a XMM-Newton target of opportunity observation and Swift XRT observations. The supersoft source (SSS) emission started between 21 and 30 d after the optical outburst and ended between 60 and 120 d after outburst, making M31N 2007-12b one of the few novae with the shortest SSS phase known. The X-ray spectrum was supersoft and can be fitted with a white dwarf (WD) atmosphere model with solar abundances absorbed by the Galact","authors_text":"D.H. Hartmann, F. Haberl, G. Sala, M. Della Valle, M. Henze, M. Hernanz, W. Pietsch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-05-03T14:18:16Z","title":"Nova M31N 2007-12b: Supersoft X-rays reveal an intermediate polar?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0590","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":"sha256:59ab33e0f4df48b7c141cd3feb0fa31c766ae6b0b78576d17530289e255b8a33","target":"record","created_at":"2026-05-18T02:02:09Z","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":"e6f99fc74ed741e9b73093f2da5e7910d3949913e86f44d5c20b41643060e5d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-05-03T14:18:16Z","title_canon_sha256":"a5b6fa3989c196e86bfbd1cb4ee7ba673322c83d9b03cb2b82cd3c78ae57d65e"},"schema_version":"1.0","source":{"id":"1105.0590","kind":"arxiv","version":1}},"canonical_sha256":"b26f1736c90ffe65df475415317ec38df5a0441d9e4436d78d01634311d162e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b26f1736c90ffe65df475415317ec38df5a0441d9e4436d78d01634311d162e0","first_computed_at":"2026-05-18T02:02:09.618754Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:09.618754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oMn9WvPkcO5i6vVFvIsE1X7YSMDV0CayeYsw0VSEQO5GENAI+6vbPlgNH0Ua3edo8JkvswxzJCuea0Rz2HIBDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:09.619420Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.0590","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59ab33e0f4df48b7c141cd3feb0fa31c766ae6b0b78576d17530289e255b8a33","sha256:a37edbf8e1059c8bc6abe77de5a558dec214a80367b0c1d6fa89e224a16992fe"],"state_sha256":"db831c8e7c2b245d9b94c0d5585801a4a1e200b284b8a0f3d821c61de9bfe6c9"}