{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:HPZ2PM6KAVPEDWQ2Y3ASMA3M3N","short_pith_number":"pith:HPZ2PM6K","schema_version":"1.0","canonical_sha256":"3bf3a7b3ca055e41da1ac6c126036cdb680343cb79c4cf020573588e88f79c41","source":{"kind":"arxiv","id":"1105.1795","version":2},"attestation_state":"computed","paper":{"title":"Resonances of a rotating black hole analogue","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Leandro A. Oliveira, Lu\\'is C. B. Crispino, Sam R. Dolan","submitted_at":"2011-05-09T20:45:34Z","abstract_excerpt":"Under certain conditions, sound waves in a fluid may be governed by a Klein-Gordon equation on an `effective spacetime' determined by the background flow properties. Here we consider the draining bathtub: a circulating, draining flow whose effective spacetime shares key features with the rotating black hole (Kerr) spacetime. We present a complete investigation of the role of quasinormal (QN) mode and Regge pole (RP) resonances of this system. First, we simulate a perturbation in the time domain by applying a finite-difference method, to demonstrate the ubiquity of `QN ringing'. Next, we solve "},"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":"1105.1795","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-09T20:45:34Z","cross_cats_sorted":[],"title_canon_sha256":"58d993f7e6c53cae3579d12903b04e7f755bbfd8bcda382ef943fc34965db745","abstract_canon_sha256":"43d940d97c3dd2251f3815dda6ee57e506a6c37378e3096dc7ce93f449bf51a4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:02:15.109491Z","signature_b64":"O49iH0kTUqtc93hsWzGbqpk7SLhje6TneqVis3sxzRo5jHEBveAnZsvp6oICpJn3DQZGw7HXpXYa9hjvc1UeDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3bf3a7b3ca055e41da1ac6c126036cdb680343cb79c4cf020573588e88f79c41","last_reissued_at":"2026-05-18T04:02:15.108781Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:02:15.108781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Resonances of a rotating black hole analogue","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Leandro A. Oliveira, Lu\\'is C. B. Crispino, Sam R. Dolan","submitted_at":"2011-05-09T20:45:34Z","abstract_excerpt":"Under certain conditions, sound waves in a fluid may be governed by a Klein-Gordon equation on an `effective spacetime' determined by the background flow properties. Here we consider the draining bathtub: a circulating, draining flow whose effective spacetime shares key features with the rotating black hole (Kerr) spacetime. We present a complete investigation of the role of quasinormal (QN) mode and Regge pole (RP) resonances of this system. First, we simulate a perturbation in the time domain by applying a finite-difference method, to demonstrate the ubiquity of `QN ringing'. Next, we solve "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1795","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1105.1795","created_at":"2026-05-18T04:02:15.108878+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.1795v2","created_at":"2026-05-18T04:02:15.108878+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1795","created_at":"2026-05-18T04:02:15.108878+00:00"},{"alias_kind":"pith_short_12","alias_value":"HPZ2PM6KAVPE","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_16","alias_value":"HPZ2PM6KAVPEDWQ2","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_8","alias_value":"HPZ2PM6K","created_at":"2026-05-18T12:26:30.835961+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/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N","json":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N.json","graph_json":"https://pith.science/api/pith-number/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/graph.json","events_json":"https://pith.science/api/pith-number/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/events.json","paper":"https://pith.science/paper/HPZ2PM6K"},"agent_actions":{"view_html":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N","download_json":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N.json","view_paper":"https://pith.science/paper/HPZ2PM6K","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.1795&json=true","fetch_graph":"https://pith.science/api/pith-number/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/graph.json","fetch_events":"https://pith.science/api/pith-number/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/action/storage_attestation","attest_author":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/action/author_attestation","sign_citation":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/action/citation_signature","submit_replication":"https://pith.science/pith/HPZ2PM6KAVPEDWQ2Y3ASMA3M3N/action/replication_record"}},"created_at":"2026-05-18T04:02:15.108878+00:00","updated_at":"2026-05-18T04:02:15.108878+00:00"}