{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JDL4FZQLCXWKJAR2O7JRERKWKQ","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":"ca2b4fb39f8fe166ac32db0e323f8fc6c8c58e1e0bfd6f09fc752552ede14820","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-18T09:01:39Z","title_canon_sha256":"33497a113e67670d0e3604b63aaa6458d1b710401b37c1f42c5121ee02eb69ce"},"schema_version":"1.0","source":{"id":"1809.06601","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.06601","created_at":"2026-05-18T00:04:54Z"},{"alias_kind":"arxiv_version","alias_value":"1809.06601v1","created_at":"2026-05-18T00:04:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.06601","created_at":"2026-05-18T00:04:54Z"},{"alias_kind":"pith_short_12","alias_value":"JDL4FZQLCXWK","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JDL4FZQLCXWKJAR2","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JDL4FZQL","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:5db570ad134e4c920c47afadfacf842fee03dcab8fb427fd052ca6541c2cf50e","target":"graph","created_at":"2026-05-18T00:04:54Z","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 revisit an alternate explanation for the turbulent nature of molecular clouds - namely, that velocity dispersions matching classical predictions of driven turbulence can be generated by the passage of clumpy material through a shock. While previous work suggested this mechanism can reproduce the observed Larson relation between velocity dispersion and size scale ($\\sigma \\propto L^{\\Gamma}$ with $\\Gamma \\approx 0.5$), the effects of self-gravity and magnetic fields were not considered. We run a series of smoothed particle magnetohydrodynamics experiments, passing clumpy gas through a shock ","authors_text":"Duncan H. Forgan, Ian A. Bonnell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-18T09:01:39Z","title":"Clumpy shocks as the driver of velocity dispersion in molecular clouds: the effects of self-gravity and magnetic fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.06601","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":"sha256:9e7860422f9de2e5a92a891aa73738d2036f003956353cb37ca5ecaa2e2fe0a7","target":"record","created_at":"2026-05-18T00:04:54Z","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":"ca2b4fb39f8fe166ac32db0e323f8fc6c8c58e1e0bfd6f09fc752552ede14820","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-18T09:01:39Z","title_canon_sha256":"33497a113e67670d0e3604b63aaa6458d1b710401b37c1f42c5121ee02eb69ce"},"schema_version":"1.0","source":{"id":"1809.06601","kind":"arxiv","version":1}},"canonical_sha256":"48d7c2e60b15eca4823a77d312455654182f4477f777f8aace6ddac220c70e9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48d7c2e60b15eca4823a77d312455654182f4477f777f8aace6ddac220c70e9b","first_computed_at":"2026-05-18T00:04:54.454898Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:54.454898Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z99/A2XQVnbWn4Xa8iOqfqowUsQzbrjwrPWZYZpUXX7Ack1lhDeadGoRjBxaM6Ba8lp924qUMshpN8HChzs8Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:54.455641Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.06601","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e7860422f9de2e5a92a891aa73738d2036f003956353cb37ca5ecaa2e2fe0a7","sha256:5db570ad134e4c920c47afadfacf842fee03dcab8fb427fd052ca6541c2cf50e"],"state_sha256":"da37347a94fce1645e216657f31ff40f4b19b914121a02d5adb1c40d9a99cda4"}