{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RNBVU2S76EMDHTASPSQPDZEVAK","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":"8a68b1cc4994058681107dc6c464f5ad9a6c2d0401fb88a33cf5ac479edd7fac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T15:33:27Z","title_canon_sha256":"162b711cacdc5d736d41f02a03805f52603e0f5f19ab2bc5c8ecd4271d8af8a7"},"schema_version":"1.0","source":{"id":"1709.00365","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00365","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00365v1","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00365","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"pith_short_12","alias_value":"RNBVU2S76EMD","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RNBVU2S76EMDHTAS","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RNBVU2S7","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:e70e344f3c312d6199ecc0e6570a5f62a79e91c7f17160eb65c6359771dac809","target":"graph","created_at":"2026-05-18T00:33:13Z","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":"Massive circumstellar disks are prone to gravitational instabilities, which trigger the formation of spiral arms that can fragment into bound clumps under the right conditions. Two dimensional simulations of self-gravitating disks are useful starting points for studying fragmentation, allowing for high-resolution simulations of thin disks. However, convergence issues can arise in 2D from various sources. One of these sources is the 2D approximation of self-gravity, which exaggerates the effect of self-gravity on small scales when the potential is not smoothed to account for the assumed vertica","authors_text":"Hans Baehr, Hubert Klahr, Kaitlin M. Kratter","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T15:33:27Z","title":"The fragmentation criteria in local vertically stratified self-gravitating disk simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00365","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":"sha256:2fecd6f24c291af3089a7aa83b7422ef667e53368848a488856780ea3063c497","target":"record","created_at":"2026-05-18T00:33:13Z","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":"8a68b1cc4994058681107dc6c464f5ad9a6c2d0401fb88a33cf5ac479edd7fac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-01T15:33:27Z","title_canon_sha256":"162b711cacdc5d736d41f02a03805f52603e0f5f19ab2bc5c8ecd4271d8af8a7"},"schema_version":"1.0","source":{"id":"1709.00365","kind":"arxiv","version":1}},"canonical_sha256":"8b435a6a5ff11833cc127ca0f1e495029b7fe094a9264ffb9bed083935a4a1c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b435a6a5ff11833cc127ca0f1e495029b7fe094a9264ffb9bed083935a4a1c5","first_computed_at":"2026-05-18T00:33:13.244568Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:13.244568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WgMQtTtwoPJW8Wc8fOXuMQnbYkCC2K732W9LY8JKnAn5+V1UkIGRWAf3zlLi0drEseKlid5NZisesGRFysrvCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:13.245233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.00365","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fecd6f24c291af3089a7aa83b7422ef667e53368848a488856780ea3063c497","sha256:e70e344f3c312d6199ecc0e6570a5f62a79e91c7f17160eb65c6359771dac809"],"state_sha256":"32174176945f5b2f192b952780552c4c2d6cfb08b9e2941bf892cdfeff586f5e"}