{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XR2SV3IAANFSE6R4UM34FCCFCQ","short_pith_number":"pith:XR2SV3IA","canonical_record":{"source":{"id":"1809.03952","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-11T14:59:24Z","cross_cats_sorted":[],"title_canon_sha256":"ba95e9c862f4b19b1ad2809e87ba7dd18add85575f603fa815929d433d49c7f1","abstract_canon_sha256":"2198c02c45d4eb2e7967f44577bf59f5fd970b841303889ed77e3ab9cedd8a3d"},"schema_version":"1.0"},"canonical_sha256":"bc752aed00034b227a3ca337c288451420601f31567011bcc9345cb0ccfd003a","source":{"kind":"arxiv","id":"1809.03952","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.03952","created_at":"2026-05-18T00:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1809.03952v2","created_at":"2026-05-18T00:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.03952","created_at":"2026-05-18T00:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"XR2SV3IAANFS","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XR2SV3IAANFSE6R4","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XR2SV3IA","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XR2SV3IAANFSE6R4UM34FCCFCQ","target":"record","payload":{"canonical_record":{"source":{"id":"1809.03952","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-11T14:59:24Z","cross_cats_sorted":[],"title_canon_sha256":"ba95e9c862f4b19b1ad2809e87ba7dd18add85575f603fa815929d433d49c7f1","abstract_canon_sha256":"2198c02c45d4eb2e7967f44577bf59f5fd970b841303889ed77e3ab9cedd8a3d"},"schema_version":"1.0"},"canonical_sha256":"bc752aed00034b227a3ca337c288451420601f31567011bcc9345cb0ccfd003a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:37.742076Z","signature_b64":"VKQ5Hufa4c0okZ7MExd+SDTws2RbFe7GG5nfJb+WnQUTI90oPFKMw/3FM0gcQYVRY/cdrDXvKmyjXGGTUQJeAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc752aed00034b227a3ca337c288451420601f31567011bcc9345cb0ccfd003a","last_reissued_at":"2026-05-18T00:01:37.741661Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:37.741661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.03952","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q+7sbnJsZ1eOA3BCkoIgxQZxETVyKNwGikBFS5XVQADq5iQ0+FD8MzPzx4p4ydI5fp25S37GxigcviVynO3MBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:53:41.442133Z"},"content_sha256":"f15a97126707fdc9c7738dc76a4ec28251838277f058a8522aaa778013a4c11b","schema_version":"1.0","event_id":"sha256:f15a97126707fdc9c7738dc76a4ec28251838277f058a8522aaa778013a4c11b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XR2SV3IAANFSE6R4UM34FCCFCQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Synchronized stationary clouds in a static fluid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Carlos A. R. Herdeiro, Carolina L. Benone, Lu\\'is C. B. Crispino, Maur\\'icio Richartz","submitted_at":"2018-09-11T14:59:24Z","abstract_excerpt":"The existence of stationary bound states for the hydrodynamic velocity field between two concentric cylinders is established. We argue that rotational motion, together with a trapping mechanism for the associated field, is sufficient to mitigate energy dissipation between the cylinders, thus allowing the existence of infinitely long lived modes, which we dub stationary clouds. We demonstrate the existence of such stationary clouds for sound and surface waves when the fluid is static and the internal cylinder rotates with constant angular velocity $\\Omega$. These setups provide a unique opportu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.03952","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8nDL6NEyULfDKJ2ErrFhjtFIdHKY1k016kaWUCdr0Yz0qoAWp9LEA9XJhqubI8cTGEqIHQrzct1fvrK52pioAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:53:41.442737Z"},"content_sha256":"ea6fd30d5fa8363c49296e395f95d12e1be438db96a49bc33af80e411ca92c59","schema_version":"1.0","event_id":"sha256:ea6fd30d5fa8363c49296e395f95d12e1be438db96a49bc33af80e411ca92c59"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XR2SV3IAANFSE6R4UM34FCCFCQ/bundle.json","state_url":"https://pith.science/pith/XR2SV3IAANFSE6R4UM34FCCFCQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XR2SV3IAANFSE6R4UM34FCCFCQ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T20:53:41Z","links":{"resolver":"https://pith.science/pith/XR2SV3IAANFSE6R4UM34FCCFCQ","bundle":"https://pith.science/pith/XR2SV3IAANFSE6R4UM34FCCFCQ/bundle.json","state":"https://pith.science/pith/XR2SV3IAANFSE6R4UM34FCCFCQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XR2SV3IAANFSE6R4UM34FCCFCQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XR2SV3IAANFSE6R4UM34FCCFCQ","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":"2198c02c45d4eb2e7967f44577bf59f5fd970b841303889ed77e3ab9cedd8a3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-11T14:59:24Z","title_canon_sha256":"ba95e9c862f4b19b1ad2809e87ba7dd18add85575f603fa815929d433d49c7f1"},"schema_version":"1.0","source":{"id":"1809.03952","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.03952","created_at":"2026-05-18T00:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1809.03952v2","created_at":"2026-05-18T00:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.03952","created_at":"2026-05-18T00:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"XR2SV3IAANFS","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XR2SV3IAANFSE6R4","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XR2SV3IA","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:ea6fd30d5fa8363c49296e395f95d12e1be438db96a49bc33af80e411ca92c59","target":"graph","created_at":"2026-05-18T00:01:37Z","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 existence of stationary bound states for the hydrodynamic velocity field between two concentric cylinders is established. We argue that rotational motion, together with a trapping mechanism for the associated field, is sufficient to mitigate energy dissipation between the cylinders, thus allowing the existence of infinitely long lived modes, which we dub stationary clouds. We demonstrate the existence of such stationary clouds for sound and surface waves when the fluid is static and the internal cylinder rotates with constant angular velocity $\\Omega$. These setups provide a unique opportu","authors_text":"Carlos A. R. Herdeiro, Carolina L. Benone, Lu\\'is C. B. Crispino, Maur\\'icio Richartz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-11T14:59:24Z","title":"Synchronized stationary clouds in a static fluid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.03952","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:f15a97126707fdc9c7738dc76a4ec28251838277f058a8522aaa778013a4c11b","target":"record","created_at":"2026-05-18T00:01:37Z","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":"2198c02c45d4eb2e7967f44577bf59f5fd970b841303889ed77e3ab9cedd8a3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-11T14:59:24Z","title_canon_sha256":"ba95e9c862f4b19b1ad2809e87ba7dd18add85575f603fa815929d433d49c7f1"},"schema_version":"1.0","source":{"id":"1809.03952","kind":"arxiv","version":2}},"canonical_sha256":"bc752aed00034b227a3ca337c288451420601f31567011bcc9345cb0ccfd003a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc752aed00034b227a3ca337c288451420601f31567011bcc9345cb0ccfd003a","first_computed_at":"2026-05-18T00:01:37.741661Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:37.741661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VKQ5Hufa4c0okZ7MExd+SDTws2RbFe7GG5nfJb+WnQUTI90oPFKMw/3FM0gcQYVRY/cdrDXvKmyjXGGTUQJeAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:37.742076Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.03952","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f15a97126707fdc9c7738dc76a4ec28251838277f058a8522aaa778013a4c11b","sha256:ea6fd30d5fa8363c49296e395f95d12e1be438db96a49bc33af80e411ca92c59"],"state_sha256":"550d215449f6774cc3104236e36fbbbc56b3ac79d07eef0c76b5a4435605c0e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zDIVvp+fPf74Ej9kQPEU6bkARrbt28pNnT+53jHqNi62HimJbsJ33UJngbHVLWL1oMAgB+urk3yWJPHR0Hn7DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T20:53:41.445745Z","bundle_sha256":"b2e78eae57165c235273976d58582b13e2bb318be545cb506cfd03debd2b20c8"}}