{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:MTRWL6KMALJT6M5FNYF3VEU6DY","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":"0aac7d1b38a3d278a30c941909f8996cefa6982d3e705fa1e0630d83334e4ca9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2011-09-27T10:13:21Z","title_canon_sha256":"27ee8071113b577e3d817c48ca9b08529ad72ad8ba17d175ff59c722e90bbb03"},"schema_version":"1.0","source":{"id":"1109.5825","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.5825","created_at":"2026-05-18T04:08:14Z"},{"alias_kind":"arxiv_version","alias_value":"1109.5825v1","created_at":"2026-05-18T04:08:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.5825","created_at":"2026-05-18T04:08:14Z"},{"alias_kind":"pith_short_12","alias_value":"MTRWL6KMALJT","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"MTRWL6KMALJT6M5F","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"MTRWL6KM","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:02f19391ed4f2c1123196322ed5df2142ae061981d07f834359471c26d602753","target":"graph","created_at":"2026-05-18T04:08:14Z","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 wake of a circular cylinder performing rotary oscillations is studied using hydrodynamic tunnel experiments at $Re=100$. Two-dimensional particle image velocimetry on the mid-plane perpendicular to the axis of cylinder is used to characterize the spatial development of the flow and its stability properties. The lock-in phenomenon that determines the boundaries between regions of the forcing parameter space were the wake is globally unstable or convectively unstable is scrutinized using the experimental data. A novel method based on the analysis of power density spectra of the flow allows u","authors_text":"Jos\\'e Eduardo Wesfreid, Juan D'Adamo, Ramiro Godoy-Diana","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2011-09-27T10:13:21Z","title":"Spatio-temporal spectral analysis of a forced cylinder wake"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.5825","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":"sha256:5b6495e3d72847468d17e1258b55e1ef5966f3bd2d66d7c46e330c4c729fc225","target":"record","created_at":"2026-05-18T04:08:14Z","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":"0aac7d1b38a3d278a30c941909f8996cefa6982d3e705fa1e0630d83334e4ca9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2011-09-27T10:13:21Z","title_canon_sha256":"27ee8071113b577e3d817c48ca9b08529ad72ad8ba17d175ff59c722e90bbb03"},"schema_version":"1.0","source":{"id":"1109.5825","kind":"arxiv","version":1}},"canonical_sha256":"64e365f94c02d33f33a56e0bba929e1e32fad015be63c355cada7feabf89466e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64e365f94c02d33f33a56e0bba929e1e32fad015be63c355cada7feabf89466e","first_computed_at":"2026-05-18T04:08:14.335963Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:14.335963Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RWQ6exDcIsG6ieNpTiEKHt0rPhAfbuQaqPZoa5+yz2RsBXijdJicz3EuvGWjC/6IJbPhR7Mw73rWQLLMUm3LDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:14.336338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.5825","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b6495e3d72847468d17e1258b55e1ef5966f3bd2d66d7c46e330c4c729fc225","sha256:02f19391ed4f2c1123196322ed5df2142ae061981d07f834359471c26d602753"],"state_sha256":"111847d4f445bf25e51e5313d208afb86e86dfcd3ea9c529778fd00ba85b3305"}