{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:WBA7QOMV7HV3VFP66DRI72FP3Y","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":"28e076a48d7a178e90ce592c18d54a89d7b2228222b91b1ed47a19e22b7d6874","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-28T12:25:48Z","title_canon_sha256":"8cfb41ecfbce3765a3623061013baa8f3ace23047dec2dd6e41091135c3b6df1"},"schema_version":"1.0","source":{"id":"astro-ph/0607641","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607641","created_at":"2026-05-18T04:28:58Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607641v2","created_at":"2026-05-18T04:28:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607641","created_at":"2026-05-18T04:28:58Z"},{"alias_kind":"pith_short_12","alias_value":"WBA7QOMV7HV3","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"WBA7QOMV7HV3VFP6","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"WBA7QOMV","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:9be36e3f7cb23188b6d9de59ad96fef28bee3a88dc5f3194d16a994cc6a41a48","target":"graph","created_at":"2026-05-18T04:28:58Z","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":"Relativistic blast waves can be described by a mechanical model. In this model, the \"blast\" -- the compressed gas between the forward and reverse shocks -- is viewed as one hot body. Equations governing its dynamics are derived from conservation of mass, energy, and momentum. Simple analytical solutions are obtained in the two limiting cases of ultra-relativistic and non-relativistic reverse shock. Equations are derived for the general explosion problem.","authors_text":"A. M. Beloborodov, Z. L. Uhm (Columbia University)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-07-28T12:25:48Z","title":"Mechanical Model for Relativistic Blast Waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607641","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":"sha256:40c1f816521ece4360b0a5dda8cd79135c12b9cdf6de47be2cfc40d762394d80","target":"record","created_at":"2026-05-18T04:28:58Z","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":"28e076a48d7a178e90ce592c18d54a89d7b2228222b91b1ed47a19e22b7d6874","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-28T12:25:48Z","title_canon_sha256":"8cfb41ecfbce3765a3623061013baa8f3ace23047dec2dd6e41091135c3b6df1"},"schema_version":"1.0","source":{"id":"astro-ph/0607641","kind":"arxiv","version":2}},"canonical_sha256":"b041f83995f9ebba95fef0e28fe8afde3682058bf89b01ff2643acc59db4045a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b041f83995f9ebba95fef0e28fe8afde3682058bf89b01ff2643acc59db4045a","first_computed_at":"2026-05-18T04:28:58.189577Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:28:58.189577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uIEhO7755F6EjglzEMKF3Qfqzwz/tTO2rKW9H5R44fGm+7BrnSTjHmuj5+LNS8AMpCiU2fdopk7F18RoQbakAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:28:58.190126Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0607641","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40c1f816521ece4360b0a5dda8cd79135c12b9cdf6de47be2cfc40d762394d80","sha256:9be36e3f7cb23188b6d9de59ad96fef28bee3a88dc5f3194d16a994cc6a41a48"],"state_sha256":"046eb0e2d0c17f029280a9a80392b4e7d0bea120cfcd9d1efc51c98f008fb64c"}