{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZNXYC266JUJDHV7BCD45GQSSOI","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":"eeb1303fb31d034860dd3dfb456f2fed151ce475e60f599c8c2115cd666fb71e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","title_canon_sha256":"7630e381db0e24121ec48ac153f85ffd91e7f25fd8f97575812a181877bfd12e"},"schema_version":"1.0","source":{"id":"1411.0991","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.0991","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"arxiv_version","alias_value":"1411.0991v1","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.0991","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZNXYC266JUJD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZNXYC266JUJDHV7B","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZNXYC266","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:b1e61fdc0e0be117b49ab4bdcdcf79352ecc62b0eb3ec9f94aee3870114a57d4","target":"graph","created_at":"2026-05-18T01:41:35Z","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":"We report Swift/BAT survey observations of the Tycho's supernova remnant, performed over a period of 104 months since the mission's launch. The remnant is detected with high significance (>10 sigma) below 50 keV. We detect significant hard X-ray emission in the 60-85 keV band, above the continuum level predicted by a simple synchrotron model. The location of the observed excess is consistent with line emission from radioactive Titanium-44, so far reported only for Type II supernova explosions. We discuss the implications of these results in the context of the galactic supernova rate, and nucle","authors_text":"A. Segreto, C. Markwardt, D. Hartmann, E. Troja, G. Cusumano, N. Gehrels, S. Barthelmy, V. La Parola, W. Baumgartner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","title":"Swift/BAT detection of hard X-rays from Tycho's Supernova Remnant: Evidence for Titanium-44"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.0991","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":"sha256:3ade4552264bdf01bcc53c06427b06639eb8428d29fe66e899135b8374b29efb","target":"record","created_at":"2026-05-18T01:41:35Z","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":"eeb1303fb31d034860dd3dfb456f2fed151ce475e60f599c8c2115cd666fb71e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","title_canon_sha256":"7630e381db0e24121ec48ac153f85ffd91e7f25fd8f97575812a181877bfd12e"},"schema_version":"1.0","source":{"id":"1411.0991","kind":"arxiv","version":1}},"canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","first_computed_at":"2026-05-18T01:41:35.251848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:35.251848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4jV80oM6HjTWrEX8AuVwZ0M4IrC0ACDpiKKLLNoHo+pKrYAFmYnvjBSjlXGKZ1hWxB8ZboaoG+EQyvqz8ih+Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:35.252509Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.0991","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ade4552264bdf01bcc53c06427b06639eb8428d29fe66e899135b8374b29efb","sha256:b1e61fdc0e0be117b49ab4bdcdcf79352ecc62b0eb3ec9f94aee3870114a57d4"],"state_sha256":"6a263fb3de1caad963e6239e4cf1852a36dc20b1031d280bd470712fa48be248"}