{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:235CRUHT25S6VZ57HE2QWRDH4M","short_pith_number":"pith:235CRUHT","schema_version":"1.0","canonical_sha256":"d6fa28d0f3d765eae7bf39350b4467e33e63085a14cd6699e6f64bebd02ec256","source":{"kind":"arxiv","id":"2405.13123","version":1},"attestation_state":"computed","paper":{"title":"Local gravitational instability of two-component thick discs in three dimensions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Carlo Nipoti, Cecilia Bacchini, Cristina Caprioglio","submitted_at":"2024-05-21T18:00:09Z","abstract_excerpt":"The local gravitational instability of rotating discs is believed to be an important mechanism in different astrophysical processes, including the formation of gas and stellar clumps in galaxies. We aim to study in three dimensions the local gravitational instability of two-component thick discs. We take as starting point a recently proposed analytic three-dimensional (3D) instability criterion for discs with non-negligible thickness which takes the form $Q_{\\rm 3D}<1$, where $Q_{\\rm 3D}$ is a 3D version of the classical 2D Toomre $Q$ parameter for razor-thin discs. Here we extend the 3D stabi"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2405.13123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-05-21T18:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"c10ae12512bbab76072b7c502e81c5796e64c37e6e55eba343715609b18a6b99","abstract_canon_sha256":"f2994f4987e3fa8ea12de1171fb78612767f62a445e7f5d60812a6efb4539458"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:21:57.833024Z","signature_b64":"gBGRZLy+ugKwuomBAgdFjioPZyZTi+cFedX/y7+NwjYF5GGnHRH3hCZbjtExkygefogKgrfrFkFCV+Spn9QJDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6fa28d0f3d765eae7bf39350b4467e33e63085a14cd6699e6f64bebd02ec256","last_reissued_at":"2026-07-05T08:21:57.832571Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:21:57.832571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Local gravitational instability of two-component thick discs in three dimensions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Carlo Nipoti, Cecilia Bacchini, Cristina Caprioglio","submitted_at":"2024-05-21T18:00:09Z","abstract_excerpt":"The local gravitational instability of rotating discs is believed to be an important mechanism in different astrophysical processes, including the formation of gas and stellar clumps in galaxies. We aim to study in three dimensions the local gravitational instability of two-component thick discs. We take as starting point a recently proposed analytic three-dimensional (3D) instability criterion for discs with non-negligible thickness which takes the form $Q_{\\rm 3D}<1$, where $Q_{\\rm 3D}$ is a 3D version of the classical 2D Toomre $Q$ parameter for razor-thin discs. Here we extend the 3D stabi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.13123","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2405.13123/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2405.13123","created_at":"2026-07-05T08:21:57.832619+00:00"},{"alias_kind":"arxiv_version","alias_value":"2405.13123v1","created_at":"2026-07-05T08:21:57.832619+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.13123","created_at":"2026-07-05T08:21:57.832619+00:00"},{"alias_kind":"pith_short_12","alias_value":"235CRUHT25S6","created_at":"2026-07-05T08:21:57.832619+00:00"},{"alias_kind":"pith_short_16","alias_value":"235CRUHT25S6VZ57","created_at":"2026-07-05T08:21:57.832619+00:00"},{"alias_kind":"pith_short_8","alias_value":"235CRUHT","created_at":"2026-07-05T08:21:57.832619+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M","json":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M.json","graph_json":"https://pith.science/api/pith-number/235CRUHT25S6VZ57HE2QWRDH4M/graph.json","events_json":"https://pith.science/api/pith-number/235CRUHT25S6VZ57HE2QWRDH4M/events.json","paper":"https://pith.science/paper/235CRUHT"},"agent_actions":{"view_html":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M","download_json":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M.json","view_paper":"https://pith.science/paper/235CRUHT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2405.13123&json=true","fetch_graph":"https://pith.science/api/pith-number/235CRUHT25S6VZ57HE2QWRDH4M/graph.json","fetch_events":"https://pith.science/api/pith-number/235CRUHT25S6VZ57HE2QWRDH4M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M/action/storage_attestation","attest_author":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M/action/author_attestation","sign_citation":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M/action/citation_signature","submit_replication":"https://pith.science/pith/235CRUHT25S6VZ57HE2QWRDH4M/action/replication_record"}},"created_at":"2026-07-05T08:21:57.832619+00:00","updated_at":"2026-07-05T08:21:57.832619+00:00"}