{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:4BIYK5LEFBJIUH6D4MWTGXZMXO","short_pith_number":"pith:4BIYK5LE","canonical_record":{"source":{"id":"1104.4148","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-21T00:53:44Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"a98da47682045a4522258e6846bc1ede5ab737c73d4db61ef10ac562a9d04059","abstract_canon_sha256":"5a69b2eb63eb1e2fbbd912aa0bceddea60b125e625d74faa70853d71d6ddc0d9"},"schema_version":"1.0"},"canonical_sha256":"e05185756428528a1fc3e32d335f2cbba3aa4872804df060af05ac36640e8b1f","source":{"kind":"arxiv","id":"1104.4148","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4148","created_at":"2026-05-18T04:21:50Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4148v1","created_at":"2026-05-18T04:21:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4148","created_at":"2026-05-18T04:21:50Z"},{"alias_kind":"pith_short_12","alias_value":"4BIYK5LEFBJI","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4BIYK5LEFBJIUH6D","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4BIYK5LE","created_at":"2026-05-18T12:26:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:4BIYK5LEFBJIUH6D4MWTGXZMXO","target":"record","payload":{"canonical_record":{"source":{"id":"1104.4148","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-21T00:53:44Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"a98da47682045a4522258e6846bc1ede5ab737c73d4db61ef10ac562a9d04059","abstract_canon_sha256":"5a69b2eb63eb1e2fbbd912aa0bceddea60b125e625d74faa70853d71d6ddc0d9"},"schema_version":"1.0"},"canonical_sha256":"e05185756428528a1fc3e32d335f2cbba3aa4872804df060af05ac36640e8b1f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:50.297546Z","signature_b64":"LLRBRFzGGm2HtuZyN6tpRvfZYthKIcxN2lRqoMy40DnsZFEZCzml3wS/RKwbDFsNxWtM0M2GfDF58YXQGQbQCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e05185756428528a1fc3e32d335f2cbba3aa4872804df060af05ac36640e8b1f","last_reissued_at":"2026-05-18T04:21:50.296985Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:50.296985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.4148","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":"2026-05-18T04:21:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kRagBzZdcC+5Z8wy+znVdgtuh+sGGC5ehGpkhsCNedpUcMgrj25RhlB4HdC21/2T2cMIzniBK8kvXarty4O7DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:27:00.782356Z"},"content_sha256":"1d75fd9f3a99e00f12f7b57e8bd527551c123d7833c0c1211c3388255e2410a8","schema_version":"1.0","event_id":"sha256:1d75fd9f3a99e00f12f7b57e8bd527551c123d7833c0c1211c3388255e2410a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:4BIYK5LEFBJIUH6D4MWTGXZMXO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic Helicity Conservation and Inverse Energy Cascade in Electron Magnetohydrodynamic Wave Packets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"astro-ph.EP","authors_text":"Jungyeon Cho","submitted_at":"2011-04-21T00:53:44Z","abstract_excerpt":"Electron magnetohydrodynamics (EMHD) provides a fluid-like description of small-scale magnetized plasmas. An EMHD wave (also known as whistler wave) propagates along magnetic field lines. The direction of propagation can be either parallel or anti-parallel to the magnetic field lines. We numerically study propagation of 3-dimensional (3D) EMHD wave packets moving in one direction. We obtain two major results: 1. Unlike its magnetohydrodynamic (MHD) counterpart, an EMHD wave packet is dispersive. Because of this, EMHD wave packets traveling in one direction create opposite traveling wave packet"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4148","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":"2026-05-18T04:21:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MhjD3wkR0i49KLyxRY3t99+AGhRM0FAKlvbBfuRsSjfaXh14ftdvZOijZh4Qnd9nuO/Cb6/+65nK5XnYOaXLCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:27:00.782708Z"},"content_sha256":"9f4330cbd08fb725c2f0117920710aa25331a04b68bdaf9c5be6d9fcd6c092e6","schema_version":"1.0","event_id":"sha256:9f4330cbd08fb725c2f0117920710aa25331a04b68bdaf9c5be6d9fcd6c092e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO/bundle.json","state_url":"https://pith.science/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO/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":"2026-06-03T20:27:00Z","links":{"resolver":"https://pith.science/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO","bundle":"https://pith.science/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO/bundle.json","state":"https://pith.science/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4BIYK5LEFBJIUH6D4MWTGXZMXO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:4BIYK5LEFBJIUH6D4MWTGXZMXO","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":"5a69b2eb63eb1e2fbbd912aa0bceddea60b125e625d74faa70853d71d6ddc0d9","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-21T00:53:44Z","title_canon_sha256":"a98da47682045a4522258e6846bc1ede5ab737c73d4db61ef10ac562a9d04059"},"schema_version":"1.0","source":{"id":"1104.4148","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4148","created_at":"2026-05-18T04:21:50Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4148v1","created_at":"2026-05-18T04:21:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4148","created_at":"2026-05-18T04:21:50Z"},{"alias_kind":"pith_short_12","alias_value":"4BIYK5LEFBJI","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4BIYK5LEFBJIUH6D","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4BIYK5LE","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:9f4330cbd08fb725c2f0117920710aa25331a04b68bdaf9c5be6d9fcd6c092e6","target":"graph","created_at":"2026-05-18T04:21:50Z","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":"Electron magnetohydrodynamics (EMHD) provides a fluid-like description of small-scale magnetized plasmas. An EMHD wave (also known as whistler wave) propagates along magnetic field lines. The direction of propagation can be either parallel or anti-parallel to the magnetic field lines. We numerically study propagation of 3-dimensional (3D) EMHD wave packets moving in one direction. We obtain two major results: 1. Unlike its magnetohydrodynamic (MHD) counterpart, an EMHD wave packet is dispersive. Because of this, EMHD wave packets traveling in one direction create opposite traveling wave packet","authors_text":"Jungyeon Cho","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-21T00:53:44Z","title":"Magnetic Helicity Conservation and Inverse Energy Cascade in Electron Magnetohydrodynamic Wave Packets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4148","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":"sha256:1d75fd9f3a99e00f12f7b57e8bd527551c123d7833c0c1211c3388255e2410a8","target":"record","created_at":"2026-05-18T04:21:50Z","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":"5a69b2eb63eb1e2fbbd912aa0bceddea60b125e625d74faa70853d71d6ddc0d9","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-21T00:53:44Z","title_canon_sha256":"a98da47682045a4522258e6846bc1ede5ab737c73d4db61ef10ac562a9d04059"},"schema_version":"1.0","source":{"id":"1104.4148","kind":"arxiv","version":1}},"canonical_sha256":"e05185756428528a1fc3e32d335f2cbba3aa4872804df060af05ac36640e8b1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e05185756428528a1fc3e32d335f2cbba3aa4872804df060af05ac36640e8b1f","first_computed_at":"2026-05-18T04:21:50.296985Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:21:50.296985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LLRBRFzGGm2HtuZyN6tpRvfZYthKIcxN2lRqoMy40DnsZFEZCzml3wS/RKwbDFsNxWtM0M2GfDF58YXQGQbQCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:21:50.297546Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4148","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d75fd9f3a99e00f12f7b57e8bd527551c123d7833c0c1211c3388255e2410a8","sha256:9f4330cbd08fb725c2f0117920710aa25331a04b68bdaf9c5be6d9fcd6c092e6"],"state_sha256":"812df656f1c89f6316e1ed15b73ac62d54ec865cf294e1f79b57f595b78ad764"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y86RGIkRT3JG+DGXx2rYM+4GM6tAFmtTZuxhZ2yiDqKLq1TfWmqCkfuwPzqQkPTFq+lWgGp2PbrW8KkEsp/MCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:27:00.784697Z","bundle_sha256":"20c92840d225ccc8bfa769abda5a3ed5a56b05d89f006ccaded39413b64be944"}}