{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:HHV4U2EMRSAUMM2ZA4H4BEIS2O","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":"cea67b5716bf12960d08ed9b9a0aabc2fe27ba4607f38a3c70f4df8e8a446310","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-31T00:45:48Z","title_canon_sha256":"2b129b2b45b91ace1ed59c77cbe67713770ccd8ca7f143794d46b6f3a2be350c"},"schema_version":"1.0","source":{"id":"1310.8355","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.8355","created_at":"2026-05-18T01:46:40Z"},{"alias_kind":"arxiv_version","alias_value":"1310.8355v1","created_at":"2026-05-18T01:46:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.8355","created_at":"2026-05-18T01:46:40Z"},{"alias_kind":"pith_short_12","alias_value":"HHV4U2EMRSAU","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HHV4U2EMRSAUMM2Z","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HHV4U2EM","created_at":"2026-05-18T12:27:46Z"}],"graph_snapshots":[{"event_id":"sha256:3991f4322bee140f837def7c1c2262fea19a0b46ed04073a6190e263e26bc35e","target":"graph","created_at":"2026-05-18T01:46:40Z","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":"Although collisionless shocks are ubiquitous in astrophysics, certain key aspects of them are not well understood. In particular, the process known as collisionless electron heating, whereby electrons are rapidly energized at the shock front, is one of the main open issues in shock physics. Here we present the first clear evidence for efficient collisionless electron heating at the reverse shock of Tycho's supernova remnant (SNR), revealed by Fe-K diagnostics using high-quality X-ray data obtained by the Suzaku satellite. We detect K-beta (3p->1s) fluorescence emission from low-ionization Fe e","authors_text":"Adam R. Foster, Carles Badenes, Daniel J. Patnaude, Hiroya Yamaguchi, John P. Hughes, Kristoffer A. Eriksen, Nancy S. Brickhouse, Patrick O. Slane, Randall K. Smith, Robert Petre","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-31T00:45:48Z","title":"New Evidence for Efficient Collisionless Heating of Electrons at the Reverse Shock of a Young Supernova Remnant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.8355","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":"sha256:91849c6c15d1ce25e1d76c7cf4d55572a78310cd1484a9717c12a784c582c011","target":"record","created_at":"2026-05-18T01:46:40Z","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":"cea67b5716bf12960d08ed9b9a0aabc2fe27ba4607f38a3c70f4df8e8a446310","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-10-31T00:45:48Z","title_canon_sha256":"2b129b2b45b91ace1ed59c77cbe67713770ccd8ca7f143794d46b6f3a2be350c"},"schema_version":"1.0","source":{"id":"1310.8355","kind":"arxiv","version":1}},"canonical_sha256":"39ebca688c8c81463359070fc09112d3a25ae293a5d04331474de7dce45e6813","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39ebca688c8c81463359070fc09112d3a25ae293a5d04331474de7dce45e6813","first_computed_at":"2026-05-18T01:46:40.718020Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:40.718020Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hgdR7UP7KDv8e1SwwA7uUuCFYL57e+DJl0pOi/rEzIZgte11VAryGyf+J+VAMIyTFrxZCmVcdPEGRd6nyrs7BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:40.718562Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.8355","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91849c6c15d1ce25e1d76c7cf4d55572a78310cd1484a9717c12a784c582c011","sha256:3991f4322bee140f837def7c1c2262fea19a0b46ed04073a6190e263e26bc35e"],"state_sha256":"6c799feed24dbdbb2524f90e736253c51b4ab93c7cd08e5bc6cb001a92d316c1"}