{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:65XI57PAENEPRJWZWLOHBL7OOU","short_pith_number":"pith:65XI57PA","canonical_record":{"source":{"id":"astro-ph/0003403","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-27T14:31:49Z","cross_cats_sorted":[],"title_canon_sha256":"ee94a4d6366f5e392810872ebb0c4962117da4ad78b3758e819d8a7c9ed5bc68","abstract_canon_sha256":"e97885081b6b0833f72fea512b4711945d199f981c3c5172a821be896ffa1bd5"},"schema_version":"1.0"},"canonical_sha256":"f76e8efde02348f8a6d9b2dc70afee7509fb722a9166455c5b5302618cac5f54","source":{"kind":"arxiv","id":"astro-ph/0003403","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0003403","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0003403v2","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0003403","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"pith_short_12","alias_value":"65XI57PAENEP","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"pith_short_16","alias_value":"65XI57PAENEPRJWZ","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"pith_short_8","alias_value":"65XI57PA","created_at":"2026-07-04T16:16:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:65XI57PAENEPRJWZWLOHBL7OOU","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0003403","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-27T14:31:49Z","cross_cats_sorted":[],"title_canon_sha256":"ee94a4d6366f5e392810872ebb0c4962117da4ad78b3758e819d8a7c9ed5bc68","abstract_canon_sha256":"e97885081b6b0833f72fea512b4711945d199f981c3c5172a821be896ffa1bd5"},"schema_version":"1.0"},"canonical_sha256":"f76e8efde02348f8a6d9b2dc70afee7509fb722a9166455c5b5302618cac5f54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:16:13.723285Z","signature_b64":"SQQHhMf84SaGo2WgNI07vyOTpe4g2KRhWwgYGv1n7TtXZw6dQWebI9AuaeR3+U/mBnBmcMGL1BB5wz+rCqIODQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f76e8efde02348f8a6d9b2dc70afee7509fb722a9166455c5b5302618cac5f54","last_reissued_at":"2026-07-04T16:16:13.722801Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:16:13.722801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0003403","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":"2026-07-04T16:16:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U7whxul3bsIttL1V8M/uaxABQ1Wc8svBh77UBFIWpg6CkiAYybNDBRPOM7+wISN6oxACmAiETTyXwSFQL/kyCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T13:54:59.499238Z"},"content_sha256":"546ec87ef8850574e7b09e717f69109bfd8fb2c243a8c238f87a9cb356dc7388","schema_version":"1.0","event_id":"sha256:546ec87ef8850574e7b09e717f69109bfd8fb2c243a8c238f87a9cb356dc7388"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:65XI57PAENEPRJWZWLOHBL7OOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Anisotropy of MHD Alfv\\'{e}nic Turbulence","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ethan T. Vishniac (JHU), Jungyeon Cho (U Texas/JHU)","submitted_at":"2000-03-27T14:31:49Z","abstract_excerpt":"We perform direct 3-dimensional numerical simulations for magnetohydrodynamic (MHD) turbulence in a periodic box of size $2\\pi$ threaded by strong uniform magnetic fields. We use a pseudo-spectral code with hyperviscosity and hyperdiffusivity to solve the incompressible MHD equations. We analyze the structure of the eddies as a function of scale. A straightforward calculation of anisotropy in wavevector space shows that the anisotropy is scale-{\\it independent}. We discuss why this is {\\it not} the true scaling law and how the curvature of large-scale magnetic fields affects the power spectrum"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0003403","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0003403/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:16:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"asR9izWLlyXIwf/IT107QjEE3XbjfRjWsXoFrLga7At55p6jmzz/WG9TQ5k6l/5vZ2xeZFfRWqn8VfqNvLxZCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T13:54:59.500224Z"},"content_sha256":"692ff3f86914e53d34f6be6d227e2c716898aaa13b5530f3dcbfd3fbe8ef6980","schema_version":"1.0","event_id":"sha256:692ff3f86914e53d34f6be6d227e2c716898aaa13b5530f3dcbfd3fbe8ef6980"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65XI57PAENEPRJWZWLOHBL7OOU/bundle.json","state_url":"https://pith.science/pith/65XI57PAENEPRJWZWLOHBL7OOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65XI57PAENEPRJWZWLOHBL7OOU/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":"2026-08-09T13:54:59Z","links":{"resolver":"https://pith.science/pith/65XI57PAENEPRJWZWLOHBL7OOU","bundle":"https://pith.science/pith/65XI57PAENEPRJWZWLOHBL7OOU/bundle.json","state":"https://pith.science/pith/65XI57PAENEPRJWZWLOHBL7OOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65XI57PAENEPRJWZWLOHBL7OOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:65XI57PAENEPRJWZWLOHBL7OOU","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":"e97885081b6b0833f72fea512b4711945d199f981c3c5172a821be896ffa1bd5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-27T14:31:49Z","title_canon_sha256":"ee94a4d6366f5e392810872ebb0c4962117da4ad78b3758e819d8a7c9ed5bc68"},"schema_version":"1.0","source":{"id":"astro-ph/0003403","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0003403","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0003403v2","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0003403","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"pith_short_12","alias_value":"65XI57PAENEP","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"pith_short_16","alias_value":"65XI57PAENEPRJWZ","created_at":"2026-07-04T16:16:13Z"},{"alias_kind":"pith_short_8","alias_value":"65XI57PA","created_at":"2026-07-04T16:16:13Z"}],"graph_snapshots":[{"event_id":"sha256:692ff3f86914e53d34f6be6d227e2c716898aaa13b5530f3dcbfd3fbe8ef6980","target":"graph","created_at":"2026-07-04T16:16:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0003403/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We perform direct 3-dimensional numerical simulations for magnetohydrodynamic (MHD) turbulence in a periodic box of size $2\\pi$ threaded by strong uniform magnetic fields. We use a pseudo-spectral code with hyperviscosity and hyperdiffusivity to solve the incompressible MHD equations. We analyze the structure of the eddies as a function of scale. A straightforward calculation of anisotropy in wavevector space shows that the anisotropy is scale-{\\it independent}. We discuss why this is {\\it not} the true scaling law and how the curvature of large-scale magnetic fields affects the power spectrum","authors_text":"Ethan T. Vishniac (JHU), Jungyeon Cho (U Texas/JHU)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-03-27T14:31:49Z","title":"The Anisotropy of MHD Alfv\\'{e}nic Turbulence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0003403","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":"sha256:546ec87ef8850574e7b09e717f69109bfd8fb2c243a8c238f87a9cb356dc7388","target":"record","created_at":"2026-07-04T16:16:13Z","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":"e97885081b6b0833f72fea512b4711945d199f981c3c5172a821be896ffa1bd5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-27T14:31:49Z","title_canon_sha256":"ee94a4d6366f5e392810872ebb0c4962117da4ad78b3758e819d8a7c9ed5bc68"},"schema_version":"1.0","source":{"id":"astro-ph/0003403","kind":"arxiv","version":2}},"canonical_sha256":"f76e8efde02348f8a6d9b2dc70afee7509fb722a9166455c5b5302618cac5f54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f76e8efde02348f8a6d9b2dc70afee7509fb722a9166455c5b5302618cac5f54","first_computed_at":"2026-07-04T16:16:13.722801Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:16:13.722801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SQQHhMf84SaGo2WgNI07vyOTpe4g2KRhWwgYGv1n7TtXZw6dQWebI9AuaeR3+U/mBnBmcMGL1BB5wz+rCqIODQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:16:13.723285Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0003403","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:546ec87ef8850574e7b09e717f69109bfd8fb2c243a8c238f87a9cb356dc7388","sha256:692ff3f86914e53d34f6be6d227e2c716898aaa13b5530f3dcbfd3fbe8ef6980"],"state_sha256":"ef03f256ac1edc791d91d8bf288ade37a0cf7dfc9f0b41a97272d94cbc4a9749"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J+xtsgJl78bkZxmkbRto9gBUOPJOjmIGEqWcIXhhGOB3HTCB9v7bvfa9aEJjjPhPo3Shs2NKTrw3hRgmFFgEBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T13:54:59.505867Z","bundle_sha256":"973c4b6b3c4661f3fd3155d96a45df895e19c44763bc1dd4366d0a7dd9a205fb"}}