{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:EKVKDOGDM2VBWS7MNQRFMU2JZP","short_pith_number":"pith:EKVKDOGD","schema_version":"1.0","canonical_sha256":"22aaa1b8c366aa1b4bec6c22565349cbd700301a5e5e9c0ed5bdb7e4793d9dab","source":{"kind":"arxiv","id":"1103.5765","version":2},"attestation_state":"computed","paper":{"title":"Antimatter production in supernova remnants","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"M.Kachelriess, R.Tomas, S.Ostapchenko","submitted_at":"2011-03-29T20:16:29Z","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"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1103.5765","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-29T20:16:29Z","cross_cats_sorted":[],"title_canon_sha256":"c5d73f217e9658bf10ff7ceb6c52abb20aa4f3ead390a31726c76b3b77897455","abstract_canon_sha256":"674282b10f90c2cddfa41b56165e4d20fa06c2aba1ca61cd565e2ed5e87e5781"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:43.163347Z","signature_b64":"uoF8V0smNGP5gM9r7XTmQOnqUdNAk91x+GWQIjGJysofdmR1ezkvKo8NE5dv47v9FKPO3ZMzIO+mYl9WJU2HBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"22aaa1b8c366aa1b4bec6c22565349cbd700301a5e5e9c0ed5bdb7e4793d9dab","last_reissued_at":"2026-05-18T02:02:43.162658Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:43.162658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Antimatter production in supernova remnants","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"M.Kachelriess, R.Tomas, S.Ostapchenko","submitted_at":"2011-03-29T20:16:29Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.5765","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1103.5765","created_at":"2026-05-18T02:02:43.162770+00:00"},{"alias_kind":"arxiv_version","alias_value":"1103.5765v2","created_at":"2026-05-18T02:02:43.162770+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.5765","created_at":"2026-05-18T02:02:43.162770+00:00"},{"alias_kind":"pith_short_12","alias_value":"EKVKDOGDM2VB","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_16","alias_value":"EKVKDOGDM2VBWS7M","created_at":"2026-05-18T12:26:28.662955+00:00"},{"alias_kind":"pith_short_8","alias_value":"EKVKDOGD","created_at":"2026-05-18T12:26:28.662955+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP","json":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP.json","graph_json":"https://pith.science/api/pith-number/EKVKDOGDM2VBWS7MNQRFMU2JZP/graph.json","events_json":"https://pith.science/api/pith-number/EKVKDOGDM2VBWS7MNQRFMU2JZP/events.json","paper":"https://pith.science/paper/EKVKDOGD"},"agent_actions":{"view_html":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP","download_json":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP.json","view_paper":"https://pith.science/paper/EKVKDOGD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1103.5765&json=true","fetch_graph":"https://pith.science/api/pith-number/EKVKDOGDM2VBWS7MNQRFMU2JZP/graph.json","fetch_events":"https://pith.science/api/pith-number/EKVKDOGDM2VBWS7MNQRFMU2JZP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP/action/storage_attestation","attest_author":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP/action/author_attestation","sign_citation":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP/action/citation_signature","submit_replication":"https://pith.science/pith/EKVKDOGDM2VBWS7MNQRFMU2JZP/action/replication_record"}},"created_at":"2026-05-18T02:02:43.162770+00:00","updated_at":"2026-05-18T02:02:43.162770+00:00"}