{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:SBALZWXKGWJFBFVPE3QLFZEWUD","short_pith_number":"pith:SBALZWXK","canonical_record":{"source":{"id":"1205.0935","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-04T12:34:35Z","cross_cats_sorted":[],"title_canon_sha256":"9dd3d376ebf5485c74667018619410aae03cf8cf1acaa598eb112c47d14a06f9","abstract_canon_sha256":"979238c5c744c1e2936595309bb9a328851a2855e22d7cd2b9f1b337cd4a1320"},"schema_version":"1.0"},"canonical_sha256":"9040bcdaea35925096af26e0b2e496a0d1563223414fa720a5c8a9085c4cb505","source":{"kind":"arxiv","id":"1205.0935","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0935","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0935v1","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0935","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"pith_short_12","alias_value":"SBALZWXKGWJF","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SBALZWXKGWJFBFVP","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SBALZWXK","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:SBALZWXKGWJFBFVPE3QLFZEWUD","target":"record","payload":{"canonical_record":{"source":{"id":"1205.0935","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-04T12:34:35Z","cross_cats_sorted":[],"title_canon_sha256":"9dd3d376ebf5485c74667018619410aae03cf8cf1acaa598eb112c47d14a06f9","abstract_canon_sha256":"979238c5c744c1e2936595309bb9a328851a2855e22d7cd2b9f1b337cd4a1320"},"schema_version":"1.0"},"canonical_sha256":"9040bcdaea35925096af26e0b2e496a0d1563223414fa720a5c8a9085c4cb505","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:38.072692Z","signature_b64":"eKuk6rqIqmmAQDiaTp0Fd4MJqOajgJkK3QoHKoysGDFCskGbVAer0Mr6qcudXiWEWVUovJhHpYVogpw5SGGdDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9040bcdaea35925096af26e0b2e496a0d1563223414fa720a5c8a9085c4cb505","last_reissued_at":"2026-05-18T01:57:38.072006Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:38.072006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.0935","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":"2026-05-18T01:57:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YYOix6Xxv8KGvEOAxoJdeL/5sFon+bSQH55Mrn2WAwizr+ZxrcmSSTWU1yPo6rD0LyX+jlldK3CHfDOfKf8yDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:36:39.023151Z"},"content_sha256":"d9c36cff8b921bc23b05c6c64d81f9e38632cdf04d1ee838ca08250d3f5bf301","schema_version":"1.0","event_id":"sha256:d9c36cff8b921bc23b05c6c64d81f9e38632cdf04d1ee838ca08250d3f5bf301"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:SBALZWXKGWJFBFVPE3QLFZEWUD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Surface Alfven waves in solar flux tubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"I. Arregui, J. Andries, J. Terradas, M. Goossens, R. Soler, T. Van Doorsselaere","submitted_at":"2012-05-04T12:34:35Z","abstract_excerpt":"Magnetohydrodynamic (MHD) waves are ubiquitous in the solar atmosphere. Alfven waves and magneto-sonic waves are particular classes of MHD waves. These wave modes are clearly different and have pure properties in uniform plasmas of infinite extent only. Due to plasma non-uniformity MHD waves have mixed properties and cannot be classified as pure Alfven or magneto-sonic waves. However, vorticity is a quantity unequivocally related to Alfven waves as compression is for magneto-sonic waves. Here, we investigate MHD waves superimposed on a one-dimensional non-uniform straight cylinder with constan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0935","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":"2026-05-18T01:57:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zKLzftjJ6OheM78u2lG16C2si4S9bVjIcggOWRhyIiY4NBRB5oQdafSq4JfNiAqPczFdYGw1kqw21ybyYdnJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:36:39.023795Z"},"content_sha256":"2145e7d8f5cd26acdab9b86142e607a4f4643fe69d90faf92c79e083e26357c1","schema_version":"1.0","event_id":"sha256:2145e7d8f5cd26acdab9b86142e607a4f4643fe69d90faf92c79e083e26357c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SBALZWXKGWJFBFVPE3QLFZEWUD/bundle.json","state_url":"https://pith.science/pith/SBALZWXKGWJFBFVPE3QLFZEWUD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SBALZWXKGWJFBFVPE3QLFZEWUD/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":"2026-05-26T03:36:39Z","links":{"resolver":"https://pith.science/pith/SBALZWXKGWJFBFVPE3QLFZEWUD","bundle":"https://pith.science/pith/SBALZWXKGWJFBFVPE3QLFZEWUD/bundle.json","state":"https://pith.science/pith/SBALZWXKGWJFBFVPE3QLFZEWUD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SBALZWXKGWJFBFVPE3QLFZEWUD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:SBALZWXKGWJFBFVPE3QLFZEWUD","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":"979238c5c744c1e2936595309bb9a328851a2855e22d7cd2b9f1b337cd4a1320","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-04T12:34:35Z","title_canon_sha256":"9dd3d376ebf5485c74667018619410aae03cf8cf1acaa598eb112c47d14a06f9"},"schema_version":"1.0","source":{"id":"1205.0935","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0935","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0935v1","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0935","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"pith_short_12","alias_value":"SBALZWXKGWJF","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SBALZWXKGWJFBFVP","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SBALZWXK","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:2145e7d8f5cd26acdab9b86142e607a4f4643fe69d90faf92c79e083e26357c1","target":"graph","created_at":"2026-05-18T01:57:38Z","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":"Magnetohydrodynamic (MHD) waves are ubiquitous in the solar atmosphere. Alfven waves and magneto-sonic waves are particular classes of MHD waves. These wave modes are clearly different and have pure properties in uniform plasmas of infinite extent only. Due to plasma non-uniformity MHD waves have mixed properties and cannot be classified as pure Alfven or magneto-sonic waves. However, vorticity is a quantity unequivocally related to Alfven waves as compression is for magneto-sonic waves. Here, we investigate MHD waves superimposed on a one-dimensional non-uniform straight cylinder with constan","authors_text":"I. Arregui, J. Andries, J. Terradas, M. Goossens, R. Soler, T. Van Doorsselaere","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-04T12:34:35Z","title":"Surface Alfven waves in solar flux tubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0935","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:d9c36cff8b921bc23b05c6c64d81f9e38632cdf04d1ee838ca08250d3f5bf301","target":"record","created_at":"2026-05-18T01:57:38Z","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":"979238c5c744c1e2936595309bb9a328851a2855e22d7cd2b9f1b337cd4a1320","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-04T12:34:35Z","title_canon_sha256":"9dd3d376ebf5485c74667018619410aae03cf8cf1acaa598eb112c47d14a06f9"},"schema_version":"1.0","source":{"id":"1205.0935","kind":"arxiv","version":1}},"canonical_sha256":"9040bcdaea35925096af26e0b2e496a0d1563223414fa720a5c8a9085c4cb505","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9040bcdaea35925096af26e0b2e496a0d1563223414fa720a5c8a9085c4cb505","first_computed_at":"2026-05-18T01:57:38.072006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:38.072006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eKuk6rqIqmmAQDiaTp0Fd4MJqOajgJkK3QoHKoysGDFCskGbVAer0Mr6qcudXiWEWVUovJhHpYVogpw5SGGdDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:38.072692Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.0935","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9c36cff8b921bc23b05c6c64d81f9e38632cdf04d1ee838ca08250d3f5bf301","sha256:2145e7d8f5cd26acdab9b86142e607a4f4643fe69d90faf92c79e083e26357c1"],"state_sha256":"2670664fccc9e863bb1578c5b1695c27c4118924accab0407beda33162cdc249"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LXH4/CP4m+XrnVf5NRw2rOkyWZ8vsVwKoZgcS+kLSovajaMtVjlEemX6dHs2gxOiiNmIVhZIS2yj10YC4z+PDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:36:39.027862Z","bundle_sha256":"bcddc19e7e9c447e9986ed48c753ce32c2bdbf0ff9e3e03c8e01d8aec912dd14"}}