{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BUMMVXQBD7NTUQCNPC76EUJRN4","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":"457f66d93938d41e9b75df9ae8d4f48dff81f698de94bda00421c36a94dd7253","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-13T20:00:06Z","title_canon_sha256":"1a20d37de484d62a76968f48691efd2a057403f38aac9dd06bb2c4c644d90e01"},"schema_version":"1.0","source":{"id":"1209.3021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.3021","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"arxiv_version","alias_value":"1209.3021v1","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.3021","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"pith_short_12","alias_value":"BUMMVXQBD7NT","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BUMMVXQBD7NTUQCN","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BUMMVXQB","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:1213062221cd03276e67182e6bd1b9d804fe6e8c875b13d36e368d8f0d2b2bd1","target":"graph","created_at":"2026-05-18T01:54:29Z","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 inspiral of a turbulent molecular cloud in the Galactic Centre may result in the formation of a small, dense and moderately eccentric gas disc around the supermassive black hole (SMBH). Such a disc is unstable to fragmentation and may lead to the formation of young massive stars in the central parsec of the Galaxy. Here we perform high-accuracy direct summation N-body simulations of a ring of massive stars (with initial semi-major axes 0.1 < a/pc < 0.4 and eccentricities 0.2 < e < 0.4), subject to the potential of the SMBH, a stellar cusp, and the parent gas disc, to study how the orbital ","authors_text":"Alessia Gualandris, Hagai B. Perets, Michela Mapelli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-13T20:00:06Z","title":"Eccentric disc instability in stellar discs formed from inspiraling gas clouds in the Galactic Centre"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.3021","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":"sha256:046bf55152fadc69ef02a082bb07312f8f13dbb649ca43942bc8a68892f48f04","target":"record","created_at":"2026-05-18T01:54:29Z","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":"457f66d93938d41e9b75df9ae8d4f48dff81f698de94bda00421c36a94dd7253","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-13T20:00:06Z","title_canon_sha256":"1a20d37de484d62a76968f48691efd2a057403f38aac9dd06bb2c4c644d90e01"},"schema_version":"1.0","source":{"id":"1209.3021","kind":"arxiv","version":1}},"canonical_sha256":"0d18cade011fdb3a404d78bfe251316f2092492d5fc1310b59e58a21c603ba59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d18cade011fdb3a404d78bfe251316f2092492d5fc1310b59e58a21c603ba59","first_computed_at":"2026-05-18T01:54:29.273737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:29.273737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sdLEIjUr9OZ2spcuEbiIU7UylnjXcmVM1Y6gck3uPPKr+PEC9CDADn3GqNHfIne1KzAMf1DPcRnS0Fh8pGRVCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:29.274338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.3021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:046bf55152fadc69ef02a082bb07312f8f13dbb649ca43942bc8a68892f48f04","sha256:1213062221cd03276e67182e6bd1b9d804fe6e8c875b13d36e368d8f0d2b2bd1"],"state_sha256":"24954415ddb399151bc74680c0287992d859895c9fc4d3fd3bef8084625d1f15"}