{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:SZIO66UP6AYNVP7UCEM5B4RJYI","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":"96bdc26406c461d8b9cc0846cc72574c27e74a76a1e3aaf165b375424c02b5c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-01T00:13:49Z","title_canon_sha256":"c0a0ac99c4e646cea460f2e290ed7167eec6f4046159d4987c54260b4e54937b"},"schema_version":"1.0","source":{"id":"0809.0161","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.0161","created_at":"2026-05-18T04:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0809.0161v1","created_at":"2026-05-18T04:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.0161","created_at":"2026-05-18T04:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"SZIO66UP6AYN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"SZIO66UP6AYNVP7U","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"SZIO66UP","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:503c4b26683dda0ddf068f7507b4e3d2b1ddb88cce6574724acb3e86b63a6456","target":"graph","created_at":"2026-05-18T04:14:36Z","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 radial-orbit instability is a collective phenomenon that has heretofore only been observed in spherical systems. We find that this instability occurs also in triaxial systems, as we checked by performing extensive N-body simulations whose initial conditions were obtained by sampling a self-consistent triaxial model of a cuspy galaxy composed of luminous and dark matter. N-body simulations show a time evolution of the galaxy that is not due to the development of chaotic motions but, rather, to the collective instability induced by an excess of box-like orbits. The instability quickly transf","authors_text":"David Merritt, Fabio Antonini, Roberto Capuzzo-Dolcetta","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-01T00:13:49Z","title":"An Instability in Triaxial Stellar Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.0161","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":"sha256:36b5c8b4ff5a07987ebcfef7ed7f4ab6cb7ebcf890dda38e068f6ba1cdad8672","target":"record","created_at":"2026-05-18T04:14:36Z","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":"96bdc26406c461d8b9cc0846cc72574c27e74a76a1e3aaf165b375424c02b5c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-09-01T00:13:49Z","title_canon_sha256":"c0a0ac99c4e646cea460f2e290ed7167eec6f4046159d4987c54260b4e54937b"},"schema_version":"1.0","source":{"id":"0809.0161","kind":"arxiv","version":1}},"canonical_sha256":"9650ef7a8ff030dabff41119d0f229c21bad185a336ee82c37c2b0f32b52db75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9650ef7a8ff030dabff41119d0f229c21bad185a336ee82c37c2b0f32b52db75","first_computed_at":"2026-05-18T04:14:36.398296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:14:36.398296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"38osGSegpQAh2TSzduUEEr3h2dYxN50a9zW5VdW8TbADAE0y04qIiqWPd5b0cuC4KOGR6CkVtonxwpKU5Y2SAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:14:36.398789Z","signed_message":"canonical_sha256_bytes"},"source_id":"0809.0161","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36b5c8b4ff5a07987ebcfef7ed7f4ab6cb7ebcf890dda38e068f6ba1cdad8672","sha256:503c4b26683dda0ddf068f7507b4e3d2b1ddb88cce6574724acb3e86b63a6456"],"state_sha256":"0fd85f3af327b53724ab57a819bb0b0853272a5314b7537d807f9ac7e633c706"}