{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:4XLAUFQWRFCR4SAIIJRS6V74V3","short_pith_number":"pith:4XLAUFQW","schema_version":"1.0","canonical_sha256":"e5d60a161689451e480842632f57fcaeece2b1f74674254fe8536c1c245c52c6","source":{"kind":"arxiv","id":"1910.06074","version":3},"attestation_state":"computed","paper":{"title":"Magnetic helicity dissipation and production in an ideal MHD code","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","physics.flu-dyn"],"primary_cat":"astro-ph.SR","authors_text":"Axel Brandenburg, Evan Scannapieco","submitted_at":"2019-10-14T12:15:33Z","abstract_excerpt":"We study a turbulent helical dynamo in a periodic domain by solving the ideal magnetohydrodynamic (MHD) equations with the FLASH code using the divergence-cleaning eight-wave method and compare our results with direct numerical simulations (DNS) using the Pencil Code. At low resolution, FLASH reproduces the DNS results qualitatively by developing the large-scale magnetic field expected from DNS, but at higher resolution, no large-scale magnetic field is obtained. In all those cases in which a large-scale magnetic field is generated, the ideal MHD results yield too little power at small scales."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1910.06074","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-10-14T12:15:33Z","cross_cats_sorted":["astro-ph.GA","physics.flu-dyn"],"title_canon_sha256":"61588c260fbf9f039d0b5c7a8fe0913b0e5fdfd9220601f97792053dbc79ee5c","abstract_canon_sha256":"fefd350cda1996fc822e4f7c243444e469d308f3e94c6c739921d12d0e2f6af3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:35:52.623076Z","signature_b64":"1RTiRnbrlG30fEAkvv3goVX2oy0hpA1nBbH2o7Vswy6lO/tz8GYXkReVIZfDqyKf9W5IAVUaojwWMur8q//2Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5d60a161689451e480842632f57fcaeece2b1f74674254fe8536c1c245c52c6","last_reissued_at":"2026-07-05T00:35:52.622623Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:35:52.622623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Magnetic helicity dissipation and production in an ideal MHD code","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","physics.flu-dyn"],"primary_cat":"astro-ph.SR","authors_text":"Axel Brandenburg, Evan Scannapieco","submitted_at":"2019-10-14T12:15:33Z","abstract_excerpt":"We study a turbulent helical dynamo in a periodic domain by solving the ideal magnetohydrodynamic (MHD) equations with the FLASH code using the divergence-cleaning eight-wave method and compare our results with direct numerical simulations (DNS) using the Pencil Code. At low resolution, FLASH reproduces the DNS results qualitatively by developing the large-scale magnetic field expected from DNS, but at higher resolution, no large-scale magnetic field is obtained. In all those cases in which a large-scale magnetic field is generated, the ideal MHD results yield too little power at small scales."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.06074","kind":"arxiv","version":3},"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/1910.06074/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1910.06074","created_at":"2026-07-05T00:35:52.622680+00:00"},{"alias_kind":"arxiv_version","alias_value":"1910.06074v3","created_at":"2026-07-05T00:35:52.622680+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.06074","created_at":"2026-07-05T00:35:52.622680+00:00"},{"alias_kind":"pith_short_12","alias_value":"4XLAUFQWRFCR","created_at":"2026-07-05T00:35:52.622680+00:00"},{"alias_kind":"pith_short_16","alias_value":"4XLAUFQWRFCR4SAI","created_at":"2026-07-05T00:35:52.622680+00:00"},{"alias_kind":"pith_short_8","alias_value":"4XLAUFQW","created_at":"2026-07-05T00:35:52.622680+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3","json":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3.json","graph_json":"https://pith.science/api/pith-number/4XLAUFQWRFCR4SAIIJRS6V74V3/graph.json","events_json":"https://pith.science/api/pith-number/4XLAUFQWRFCR4SAIIJRS6V74V3/events.json","paper":"https://pith.science/paper/4XLAUFQW"},"agent_actions":{"view_html":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3","download_json":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3.json","view_paper":"https://pith.science/paper/4XLAUFQW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1910.06074&json=true","fetch_graph":"https://pith.science/api/pith-number/4XLAUFQWRFCR4SAIIJRS6V74V3/graph.json","fetch_events":"https://pith.science/api/pith-number/4XLAUFQWRFCR4SAIIJRS6V74V3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3/action/storage_attestation","attest_author":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3/action/author_attestation","sign_citation":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3/action/citation_signature","submit_replication":"https://pith.science/pith/4XLAUFQWRFCR4SAIIJRS6V74V3/action/replication_record"}},"created_at":"2026-07-05T00:35:52.622680+00:00","updated_at":"2026-07-05T00:35:52.622680+00:00"}