{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EKVKDOGDM2VBWS7MNQRFMU2JZP","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":"674282b10f90c2cddfa41b56165e4d20fa06c2aba1ca61cd565e2ed5e87e5781","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-29T20:16:29Z","title_canon_sha256":"c5d73f217e9658bf10ff7ceb6c52abb20aa4f3ead390a31726c76b3b77897455"},"schema_version":"1.0","source":{"id":"1103.5765","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.5765","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"arxiv_version","alias_value":"1103.5765v2","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.5765","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"pith_short_12","alias_value":"EKVKDOGDM2VB","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EKVKDOGDM2VBWS7M","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EKVKDOGD","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:6e86b72219d78ea1ed0459f74aabb1a7c8f5a758e80b219123e37675fd17547b","target":"graph","created_at":"2026-05-18T02:02:43Z","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 calculate the energy spectra of cosmic rays (CR) and their secondaries produced in a supernova remnant (SNR), taking into account the time-dependence of the SNR shock. We model the trajectories of charged particles as a random walk with a prescribed diffusion coefficient, accelerating the particles at each shock crossing. Secondary production by CRs colliding with gas is included as a Monte Carlo process. We find that SNRs produce less antimatter than suggested previously: The positron/electron ratio and the antiproton/proton ratio are a few percent and few $\\times 10^{-5}$, respectively. M","authors_text":"M.Kachelriess, R.Tomas, S.Ostapchenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-29T20:16:29Z","title":"Antimatter production in supernova remnants"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.5765","kind":"arxiv","version":2},"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:e500e345cecc2b741598d5faf38cce17b5bffe2c7fe5e785786c017fbfede38d","target":"record","created_at":"2026-05-18T02:02:43Z","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":"674282b10f90c2cddfa41b56165e4d20fa06c2aba1ca61cd565e2ed5e87e5781","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-29T20:16:29Z","title_canon_sha256":"c5d73f217e9658bf10ff7ceb6c52abb20aa4f3ead390a31726c76b3b77897455"},"schema_version":"1.0","source":{"id":"1103.5765","kind":"arxiv","version":2}},"canonical_sha256":"22aaa1b8c366aa1b4bec6c22565349cbd700301a5e5e9c0ed5bdb7e4793d9dab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"22aaa1b8c366aa1b4bec6c22565349cbd700301a5e5e9c0ed5bdb7e4793d9dab","first_computed_at":"2026-05-18T02:02:43.162658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:43.162658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uoF8V0smNGP5gM9r7XTmQOnqUdNAk91x+GWQIjGJysofdmR1ezkvKo8NE5dv47v9FKPO3ZMzIO+mYl9WJU2HBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:43.163347Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.5765","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e500e345cecc2b741598d5faf38cce17b5bffe2c7fe5e785786c017fbfede38d","sha256:6e86b72219d78ea1ed0459f74aabb1a7c8f5a758e80b219123e37675fd17547b"],"state_sha256":"1c0ae58299dac905429702a5d24cb74477a5daff454e86ff7879efd770eb58af"}