{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BAGZSMUEE4U2UGRPXB7WQGODYK","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":"5d47ebec71c8b8ecb7ba04461f74490614e0c1c280dc44a041238d3779dc1694","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-01-13T02:27:01Z","title_canon_sha256":"49bd623b40c03c98d65114d68a62ace01dac8fbc891077426de0dd865bf2f32b"},"schema_version":"1.0","source":{"id":"0901.1702","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.1702","created_at":"2026-05-18T04:29:23Z"},{"alias_kind":"arxiv_version","alias_value":"0901.1702v1","created_at":"2026-05-18T04:29:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.1702","created_at":"2026-05-18T04:29:23Z"},{"alias_kind":"pith_short_12","alias_value":"BAGZSMUEE4U2","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BAGZSMUEE4U2UGRP","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BAGZSMUE","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:68098f9c2a535a4d6d6d801f43ea48689a946b7c478291191836ce846e7e53da","target":"graph","created_at":"2026-05-18T04:29:23Z","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 use kinetic simulations of diffusive shock acceleration (DSA) to study the time-dependent evolution of plane, quasi-parallel, cosmic-ray (CR) modified shocks. Thermal leakage injection of low energy CRs and finite Alfv\\'en wave propagation and dissipation are included. Bohm diffusion as well as the diffusion with the power-law momentum dependence are modeled. As long as the acceleration time scale to relativistic energies is much shorter than the dynamical evolution time scale of the shocks, the precursor and subshock transition approach the time-asymptotic state, which depends on the shock","authors_text":"Dongsu Ryu, Hyesung Kang, T. W. Jones","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-01-13T02:27:01Z","title":"Self-Similar Evolution of Cosmic-Ray Modified Shocks: The Cosmic-Ray Spectrum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.1702","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":"sha256:89c162ea0905e8afb6723706fac036a43ddda045da849611976ca19e7fc7cc5c","target":"record","created_at":"2026-05-18T04:29:23Z","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":"5d47ebec71c8b8ecb7ba04461f74490614e0c1c280dc44a041238d3779dc1694","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-01-13T02:27:01Z","title_canon_sha256":"49bd623b40c03c98d65114d68a62ace01dac8fbc891077426de0dd865bf2f32b"},"schema_version":"1.0","source":{"id":"0901.1702","kind":"arxiv","version":1}},"canonical_sha256":"080d9932842729aa1a2fb87f6819c3c2bc00e2c84dca5e15b75d87bb0aac0a4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"080d9932842729aa1a2fb87f6819c3c2bc00e2c84dca5e15b75d87bb0aac0a4f","first_computed_at":"2026-05-18T04:29:23.913475Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:23.913475Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RfFaXk5voktDSrGYMSVEQ9KIlkrRWnwv5sH4KM2KjE2011xAOLhIdrI8Mwa328DMW9TPFLiAvZKUMkyClOeCBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:23.914041Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.1702","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89c162ea0905e8afb6723706fac036a43ddda045da849611976ca19e7fc7cc5c","sha256:68098f9c2a535a4d6d6d801f43ea48689a946b7c478291191836ce846e7e53da"],"state_sha256":"28afee47ed2fcdb30864335758e616fe9a76b64ed102615eabfeb999ba8c728d"}