{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:6CABUAE6SXBAATPSO35XZFPGGB","short_pith_number":"pith:6CABUAE6","canonical_record":{"source":{"id":"astro-ph/0301205","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-01-13T13:29:45Z","cross_cats_sorted":[],"title_canon_sha256":"c83c9604d1c07fcc94d7e18d5f2a099fff5b3cbe53f8042a732bdc5a9244f62e","abstract_canon_sha256":"a56c74faf842ebccef101fce6dd1db13b288f4ca947a181cc08de66170d5f6db"},"schema_version":"1.0"},"canonical_sha256":"f0801a009e95c2004df276fb7c95e6305b04b9d1ca532471f95e9a2cfb6a7788","source":{"kind":"arxiv","id":"astro-ph/0301205","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0301205","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0301205v2","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0301205","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"pith_short_12","alias_value":"6CABUAE6SXBA","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"6CABUAE6SXBAATPS","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"6CABUAE6","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:6CABUAE6SXBAATPSO35XZFPGGB","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0301205","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-01-13T13:29:45Z","cross_cats_sorted":[],"title_canon_sha256":"c83c9604d1c07fcc94d7e18d5f2a099fff5b3cbe53f8042a732bdc5a9244f62e","abstract_canon_sha256":"a56c74faf842ebccef101fce6dd1db13b288f4ca947a181cc08de66170d5f6db"},"schema_version":"1.0"},"canonical_sha256":"f0801a009e95c2004df276fb7c95e6305b04b9d1ca532471f95e9a2cfb6a7788","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:42.217182Z","signature_b64":"HRJgPCzEcjgd3CGVUBbvEVT0uXkMOgUmj83dOa7+lLTyr3VsY08obLOQ9MSguNU1s/pcOPcjsq7E4/ckA5KzBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0801a009e95c2004df276fb7c95e6305b04b9d1ca532471f95e9a2cfb6a7788","last_reissued_at":"2026-05-18T04:21:42.216549Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:42.216549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0301205","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:21:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qLQRIGaCgNUMpDWjj7Y1/7/436ME4jjkp5PkewoevbaauLcQ2CDynpLwT3V+9HxqHdebDCxt7cFO403xzi0QDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T18:50:56.512349Z"},"content_sha256":"ae0b1310103d060ab11de90ebafe0c05dfbe11c971cdf6fd4365e2f591b91252","schema_version":"1.0","event_id":"sha256:ae0b1310103d060ab11de90ebafe0c05dfbe11c971cdf6fd4365e2f591b91252"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:6CABUAE6SXBAATPSO35XZFPGGB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gamma-ray emission from Cassiopeia A produced by accelerated cosmic rays","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Max Planck Institut fuer Kernphysik, Aeronomy, E.G. Berezhko (1), G. Puehlhofer (2), Heidelberg), H.J. Voelk (2) ((1) Institute of Cosmophysical Research, Yakutsk","submitted_at":"2003-01-13T13:29:45Z","abstract_excerpt":"The nonlinear kinetic model of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to describe the relevant properties of Cassiopeia A (Cas A). In order to reproduce the SNR's observed size, expansion rate and thermal X-ray emission we employ a piecewise homogeneous model for the progenitor's circumstellar medium developed by Borkowski et al. (1996). It consists of a tenuous inner wind bubble, a dense shell of swept-up red supergiant wind material, and a subsequent red supergiant wind region. A quite large SNR interior magnetic field B_d approx 1 mG is required to give a good fit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0301205","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:21:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jyj/rNdveZxn0RNYk38O2pgjtZKxWisSnUSRXuNTP7nW8w1RrZIQnA/HxcMpCLV6RqpwCzHBq8F8VsML6mzDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T18:50:56.513055Z"},"content_sha256":"d8713e5c01b5b2e4811d1b68356910bdf6cdbd0dd9a5bdf13158a4c37919dc47","schema_version":"1.0","event_id":"sha256:d8713e5c01b5b2e4811d1b68356910bdf6cdbd0dd9a5bdf13158a4c37919dc47"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6CABUAE6SXBAATPSO35XZFPGGB/bundle.json","state_url":"https://pith.science/pith/6CABUAE6SXBAATPSO35XZFPGGB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6CABUAE6SXBAATPSO35XZFPGGB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-24T18:50:56Z","links":{"resolver":"https://pith.science/pith/6CABUAE6SXBAATPSO35XZFPGGB","bundle":"https://pith.science/pith/6CABUAE6SXBAATPSO35XZFPGGB/bundle.json","state":"https://pith.science/pith/6CABUAE6SXBAATPSO35XZFPGGB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6CABUAE6SXBAATPSO35XZFPGGB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:6CABUAE6SXBAATPSO35XZFPGGB","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":"a56c74faf842ebccef101fce6dd1db13b288f4ca947a181cc08de66170d5f6db","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-01-13T13:29:45Z","title_canon_sha256":"c83c9604d1c07fcc94d7e18d5f2a099fff5b3cbe53f8042a732bdc5a9244f62e"},"schema_version":"1.0","source":{"id":"astro-ph/0301205","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0301205","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0301205v2","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0301205","created_at":"2026-05-18T04:21:42Z"},{"alias_kind":"pith_short_12","alias_value":"6CABUAE6SXBA","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"6CABUAE6SXBAATPS","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"6CABUAE6","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:d8713e5c01b5b2e4811d1b68356910bdf6cdbd0dd9a5bdf13158a4c37919dc47","target":"graph","created_at":"2026-05-18T04:21:42Z","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":"The nonlinear kinetic model of cosmic ray (CR) acceleration in supernova remnants (SNRs) is used to describe the relevant properties of Cassiopeia A (Cas A). In order to reproduce the SNR's observed size, expansion rate and thermal X-ray emission we employ a piecewise homogeneous model for the progenitor's circumstellar medium developed by Borkowski et al. (1996). It consists of a tenuous inner wind bubble, a dense shell of swept-up red supergiant wind material, and a subsequent red supergiant wind region. A quite large SNR interior magnetic field B_d approx 1 mG is required to give a good fit","authors_text":"(2) Max Planck Institut fuer Kernphysik, Aeronomy, E.G. Berezhko (1), G. Puehlhofer (2), Heidelberg), H.J. Voelk (2) ((1) Institute of Cosmophysical Research, Yakutsk","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-01-13T13:29:45Z","title":"Gamma-ray emission from Cassiopeia A produced by accelerated cosmic rays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0301205","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:ae0b1310103d060ab11de90ebafe0c05dfbe11c971cdf6fd4365e2f591b91252","target":"record","created_at":"2026-05-18T04:21:42Z","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":"a56c74faf842ebccef101fce6dd1db13b288f4ca947a181cc08de66170d5f6db","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-01-13T13:29:45Z","title_canon_sha256":"c83c9604d1c07fcc94d7e18d5f2a099fff5b3cbe53f8042a732bdc5a9244f62e"},"schema_version":"1.0","source":{"id":"astro-ph/0301205","kind":"arxiv","version":2}},"canonical_sha256":"f0801a009e95c2004df276fb7c95e6305b04b9d1ca532471f95e9a2cfb6a7788","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0801a009e95c2004df276fb7c95e6305b04b9d1ca532471f95e9a2cfb6a7788","first_computed_at":"2026-05-18T04:21:42.216549Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:21:42.216549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HRJgPCzEcjgd3CGVUBbvEVT0uXkMOgUmj83dOa7+lLTyr3VsY08obLOQ9MSguNU1s/pcOPcjsq7E4/ckA5KzBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:21:42.217182Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0301205","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ae0b1310103d060ab11de90ebafe0c05dfbe11c971cdf6fd4365e2f591b91252","sha256:d8713e5c01b5b2e4811d1b68356910bdf6cdbd0dd9a5bdf13158a4c37919dc47"],"state_sha256":"15ee6535e7582795bb0050704d7e76bbde7b1e97d4c4816b4e62e4c0f1663448"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jEys1nhIYZFll1Fz2Uw13V29wbPVXYvRgTuYYEXQNVeP3juINl0CX/KpOTAbHgKQSLxqTkROmDeRoUwtQQYZBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T18:50:56.516998Z","bundle_sha256":"705a6baf29f457b03435de32e2965842e59bbddeb592d233b41ba2ceeaab9326"}}