{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:4FUXQ7QLOOOLNWPTZGBXKIDPML","short_pith_number":"pith:4FUXQ7QL","canonical_record":{"source":{"id":"1204.6339","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-04-27T22:10:32Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"10e5c922220d69c8561b9fd89dd61034d049d8a61541cc154ba04cf8f354d3a3","abstract_canon_sha256":"f297b88310dcda4af5ab737c12d6675c276a0c74a1e11b675d3a6a951a9a832f"},"schema_version":"1.0"},"canonical_sha256":"e169787e0b739cb6d9f3c98375206f62cb2da456f0e5cd84c93015f4cd6f8038","source":{"kind":"arxiv","id":"1204.6339","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.6339","created_at":"2026-05-18T03:56:45Z"},{"alias_kind":"arxiv_version","alias_value":"1204.6339v1","created_at":"2026-05-18T03:56:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.6339","created_at":"2026-05-18T03:56:45Z"},{"alias_kind":"pith_short_12","alias_value":"4FUXQ7QLOOOL","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4FUXQ7QLOOOLNWPT","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4FUXQ7QL","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:4FUXQ7QLOOOLNWPTZGBXKIDPML","target":"record","payload":{"canonical_record":{"source":{"id":"1204.6339","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-04-27T22:10:32Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"10e5c922220d69c8561b9fd89dd61034d049d8a61541cc154ba04cf8f354d3a3","abstract_canon_sha256":"f297b88310dcda4af5ab737c12d6675c276a0c74a1e11b675d3a6a951a9a832f"},"schema_version":"1.0"},"canonical_sha256":"e169787e0b739cb6d9f3c98375206f62cb2da456f0e5cd84c93015f4cd6f8038","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:56:45.833254Z","signature_b64":"FzNuV2B02dl+q+P1XX3ZGc6i4IgHemWhBSgUeAl2kWEcQh8a7v/V7xkfp/znNVA6XBzTt/oKrKceQq4bOFcGBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e169787e0b739cb6d9f3c98375206f62cb2da456f0e5cd84c93015f4cd6f8038","last_reissued_at":"2026-05-18T03:56:45.832585Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:56:45.832585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.6339","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:56:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7BKqgfInRj6Iz1ta7x8/8Y1jRRgZPXNSfkdKI4W2+0qsINrYqAsTFUpjeKvGdsPm1HrLuvvMJ37IgarJDvDCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:35:06.342144Z"},"content_sha256":"caf1841df13283f3081883ba0476559a080ab38774582fb28281c7c47fccee99","schema_version":"1.0","event_id":"sha256:caf1841df13283f3081883ba0476559a080ab38774582fb28281c7c47fccee99"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:4FUXQ7QLOOOLNWPTZGBXKIDPML","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of a Free-Shercliff-Layer Instability in Cylindrical Geometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.flu-dyn","authors_text":"Austin Roach, Christophe Gissinger, Eric Edlund, Erik Spence, Hantao Ji, Jeremy Goodman, Peter Sloboda","submitted_at":"2012-04-27T22:10:32Z","abstract_excerpt":"We report on observations of a free-Shercliff-layer instability in a Taylor-Couette experiment using a liquid metal over a wide range of Reynolds numbers, $Re\\sim 10^3-10^6$. The free Shercliff layer is formed by imposing a sufficiently strong axial magnetic field across a pair of differentially rotating axial endcap rings. This layer is destabilized by a hydrodynamic Kelvin-Helmholtz-type instability, characterized by velocity fluctuations in the $r-\\theta$ plane. The instability appears with an Elsasser number above unity, and saturates with an azimuthal mode number $m$ which increases with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.6339","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":""},"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":"2026-05-18T03:56:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KyVoFsb7dV50y9S3gI/67cXQfmVutu2gsnY08B9kTOIY0FL537LYdDNqLsVRWUHBrCxz531ic63CE7KH5KiACQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:35:06.342730Z"},"content_sha256":"ef6572c051cd6a5a2b51f9383b96cfb5c1b772130cf6b440df2a10ff22aa5992","schema_version":"1.0","event_id":"sha256:ef6572c051cd6a5a2b51f9383b96cfb5c1b772130cf6b440df2a10ff22aa5992"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML/bundle.json","state_url":"https://pith.science/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML/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":"2026-05-27T07:35:06Z","links":{"resolver":"https://pith.science/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML","bundle":"https://pith.science/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML/bundle.json","state":"https://pith.science/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4FUXQ7QLOOOLNWPTZGBXKIDPML/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:4FUXQ7QLOOOLNWPTZGBXKIDPML","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":"f297b88310dcda4af5ab737c12d6675c276a0c74a1e11b675d3a6a951a9a832f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-04-27T22:10:32Z","title_canon_sha256":"10e5c922220d69c8561b9fd89dd61034d049d8a61541cc154ba04cf8f354d3a3"},"schema_version":"1.0","source":{"id":"1204.6339","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.6339","created_at":"2026-05-18T03:56:45Z"},{"alias_kind":"arxiv_version","alias_value":"1204.6339v1","created_at":"2026-05-18T03:56:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.6339","created_at":"2026-05-18T03:56:45Z"},{"alias_kind":"pith_short_12","alias_value":"4FUXQ7QLOOOL","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4FUXQ7QLOOOLNWPT","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4FUXQ7QL","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:ef6572c051cd6a5a2b51f9383b96cfb5c1b772130cf6b440df2a10ff22aa5992","target":"graph","created_at":"2026-05-18T03:56:45Z","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":"We report on observations of a free-Shercliff-layer instability in a Taylor-Couette experiment using a liquid metal over a wide range of Reynolds numbers, $Re\\sim 10^3-10^6$. The free Shercliff layer is formed by imposing a sufficiently strong axial magnetic field across a pair of differentially rotating axial endcap rings. This layer is destabilized by a hydrodynamic Kelvin-Helmholtz-type instability, characterized by velocity fluctuations in the $r-\\theta$ plane. The instability appears with an Elsasser number above unity, and saturates with an azimuthal mode number $m$ which increases with ","authors_text":"Austin Roach, Christophe Gissinger, Eric Edlund, Erik Spence, Hantao Ji, Jeremy Goodman, Peter Sloboda","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-04-27T22:10:32Z","title":"Observation of a Free-Shercliff-Layer Instability in Cylindrical Geometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.6339","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:caf1841df13283f3081883ba0476559a080ab38774582fb28281c7c47fccee99","target":"record","created_at":"2026-05-18T03:56:45Z","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":"f297b88310dcda4af5ab737c12d6675c276a0c74a1e11b675d3a6a951a9a832f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-04-27T22:10:32Z","title_canon_sha256":"10e5c922220d69c8561b9fd89dd61034d049d8a61541cc154ba04cf8f354d3a3"},"schema_version":"1.0","source":{"id":"1204.6339","kind":"arxiv","version":1}},"canonical_sha256":"e169787e0b739cb6d9f3c98375206f62cb2da456f0e5cd84c93015f4cd6f8038","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e169787e0b739cb6d9f3c98375206f62cb2da456f0e5cd84c93015f4cd6f8038","first_computed_at":"2026-05-18T03:56:45.832585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:56:45.832585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FzNuV2B02dl+q+P1XX3ZGc6i4IgHemWhBSgUeAl2kWEcQh8a7v/V7xkfp/znNVA6XBzTt/oKrKceQq4bOFcGBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:56:45.833254Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.6339","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:caf1841df13283f3081883ba0476559a080ab38774582fb28281c7c47fccee99","sha256:ef6572c051cd6a5a2b51f9383b96cfb5c1b772130cf6b440df2a10ff22aa5992"],"state_sha256":"691458ddcdad3b6e9adc77a0c9684ab359fbae0825fe87dc02cbd2a1d9089f17"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8vg1x4J02jb8gipNw/x/X2UfCSxFNmxnGy3qWt6RpKYQRG1fD2Xq/hWy3nnu8RTRvQAyrQ7Bfk/5ZMcNVAPRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:35:06.346133Z","bundle_sha256":"0b4c39ec37671f7652518c565b1c81c2a01fd8d87a245d879d352c60dbe8d693"}}