{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:OMDFOM77VW3AM4DKA4BOWXFXCA","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":"76fee7b079c7bc17b0359d0c195d94c20ba68e270c055e16f2a8fcd3539257b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-08-27T20:12:39Z","title_canon_sha256":"95046cc124846ca4933dd4616a17aece5914fa22188a43c5e860907500574b58"},"schema_version":"1.0","source":{"id":"1408.6550","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6550","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6550v2","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6550","created_at":"2026-05-18T01:42:12Z"},{"alias_kind":"pith_short_12","alias_value":"OMDFOM77VW3A","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"OMDFOM77VW3AM4DK","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"OMDFOM77","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:33559b6bf3b024076e7393e963a184f8397f74dc3969f4a7512e5397546864d2","target":"graph","created_at":"2026-05-18T01:42:12Z","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":"General-purpose, moving-mesh schemes for hydrodynamics have opened the possibility of combining the accuracy of grid-based numerical methods with the flexibility and automatic resolution adaptivity of particle-based methods. Due to their supersonic nature, Keplerian accretion discs are in principle a very attractive system for applying such freely moving mesh techniques. However, the high degree of symmetry of simple accretion disc models can be difficult to capture accurately by these methods, due to the generation of geometric grid noise and associated numerical diffusion, which is absent in","authors_text":"Diego J. Munoz (Cornell), Kaitlin M. Kratter (Arizona), Lars Hernquist (Harvard), Volker Springel (HITS)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-08-27T20:12:39Z","title":"Planet-disc interaction on a freely moving mesh"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6550","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:d4b9cd7ef6e2876a7913a0c055c58f4867cff4e54dd65659876a22399f268584","target":"record","created_at":"2026-05-18T01:42:12Z","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":"76fee7b079c7bc17b0359d0c195d94c20ba68e270c055e16f2a8fcd3539257b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-08-27T20:12:39Z","title_canon_sha256":"95046cc124846ca4933dd4616a17aece5914fa22188a43c5e860907500574b58"},"schema_version":"1.0","source":{"id":"1408.6550","kind":"arxiv","version":2}},"canonical_sha256":"73065733ffadb606706a0702eb5cb71002f546673285069c084ecf7ea5535ebb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73065733ffadb606706a0702eb5cb71002f546673285069c084ecf7ea5535ebb","first_computed_at":"2026-05-18T01:42:12.484817Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:12.484817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sDkEQxUCj6CEJk6zzr0nyQPcEsxWApMFcXcGTtdjxvSbffO/FxZ569OLZUrs91SwFv4lJGz2PusVuzjy65CQAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:12.485550Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.6550","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4b9cd7ef6e2876a7913a0c055c58f4867cff4e54dd65659876a22399f268584","sha256:33559b6bf3b024076e7393e963a184f8397f74dc3969f4a7512e5397546864d2"],"state_sha256":"c1b1a00b0fef532f259b3b3ea005c0a0a6e3219ef8d9b0ffb25c19ffddd2e75e"}