{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KPAOWZ35PTVGKB3V7C3KRRRZZ5","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":"e93364eb790f7f14ed1c60f2ec3173b1c1370a6018e74dbfd8d591cb66e34f60","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-09T18:59:41Z","title_canon_sha256":"2d043dfeb28246c5b437b46dfc88b091fb4bd0d81b3299b5165894614c822f3c"},"schema_version":"1.0","source":{"id":"1803.03638","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03638","created_at":"2026-05-18T00:09:26Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03638v2","created_at":"2026-05-18T00:09:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03638","created_at":"2026-05-18T00:09:26Z"},{"alias_kind":"pith_short_12","alias_value":"KPAOWZ35PTVG","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KPAOWZ35PTVGKB3V","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KPAOWZ35","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:182c906535aa72a9d4c1c4124b2de344c3657d3b770c354d2bed7e5ea7fe5197","target":"graph","created_at":"2026-05-18T00:09:26Z","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 Streaming Instability (SI) is a mechanism to concentrate solids in protoplanetary disks. Nonlinear particle clumping from the SI can trigger gravitational collapse into planetesimals. To better understand the numerical robustness of the SI, we perform a suite of vertically-stratified 3D simulations with fixed physical parameters known to produce strong clumping. We vary the numerical implementation, namely the computational domain size and the vertical boundary conditions (vBCs), comparing newly-implemented outflow vBCs to the previously-used periodic and reflecting vBCs. We find strong pa","authors_text":"Andrew N. Youdin, Jacob B. Simon, Rixin Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-09T18:59:41Z","title":"On the Numerical Robustness of the Streaming Instability: Particle Concentration and Gas Dynamics in Protoplanetary Disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03638","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:b637d94fd0c325ff2dcff8283b4fca36215df88389cbdbb4fb2f8b1f5492782b","target":"record","created_at":"2026-05-18T00:09:26Z","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":"e93364eb790f7f14ed1c60f2ec3173b1c1370a6018e74dbfd8d591cb66e34f60","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-09T18:59:41Z","title_canon_sha256":"2d043dfeb28246c5b437b46dfc88b091fb4bd0d81b3299b5165894614c822f3c"},"schema_version":"1.0","source":{"id":"1803.03638","kind":"arxiv","version":2}},"canonical_sha256":"53c0eb677d7cea650775f8b6a8c639cf6d1b0415efa57d803381a10d710042a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53c0eb677d7cea650775f8b6a8c639cf6d1b0415efa57d803381a10d710042a4","first_computed_at":"2026-05-18T00:09:26.732207Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:26.732207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/5w2AZO6MaFpt6wd7W6qSt8XExlXmyev3uz49SRcrCjg4biyVGPZJt0ye4KyagR1eEkzJxUP5WaHLW0JaM2WDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:26.732911Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.03638","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b637d94fd0c325ff2dcff8283b4fca36215df88389cbdbb4fb2f8b1f5492782b","sha256:182c906535aa72a9d4c1c4124b2de344c3657d3b770c354d2bed7e5ea7fe5197"],"state_sha256":"ff0fe8b392f8abfbde97456ac3e718e71fca890df90416153ba5369ca1264511"}