{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:SEX4HSPJ3U25M6CQB6OC3V4NOE","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":"9a7d20db6458225bd8ff8c5af357df5be98634305ce38df1d400a99c348531f5","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-12-08T14:01:29Z","title_canon_sha256":"021c8e7c271c33dc1862342ad3b68c1b4c42ae4dc4844ed62bb192cdf8717956"},"schema_version":"1.0","source":{"id":"0912.1498","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.1498","created_at":"2026-05-18T02:10:25Z"},{"alias_kind":"arxiv_version","alias_value":"0912.1498v1","created_at":"2026-05-18T02:10:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.1498","created_at":"2026-05-18T02:10:25Z"},{"alias_kind":"pith_short_12","alias_value":"SEX4HSPJ3U25","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SEX4HSPJ3U25M6CQ","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SEX4HSPJ","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:76c7f8c9c86ed080b229f09cbd6e00093b39090de31b2e6718e7c989b87b0ee1","target":"graph","created_at":"2026-05-18T02:10:25Z","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":"Despite greatly improved observational methods, the presence of magnetic fields at cosmological scales and their role in the process of large-scale structure formation still remains unclear. In this paper we want to address the question how the presence of a hypothetical primordial magnetic field on large scales influences the cosmic structure formation in numerical simulations. As a tool for carrying out such simulations, we present our new numerical code AMIGA. It combines an N-body code with an Eulerian grid-based solver for the full set of MHD equations in order to conduct simulations of d","authors_text":"Alexander Knebe, Timur Doumler","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-12-08T14:01:29Z","title":"Investigating the influence of magnetic fields upon structure formation with AMIGA - a C code for cosmological magnetohydrodynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.1498","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":"sha256:428dc660727e471a894d7c8a9ea4ec92a9822ba9436ddc0792d6bf3597b4fc2e","target":"record","created_at":"2026-05-18T02:10:25Z","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":"9a7d20db6458225bd8ff8c5af357df5be98634305ce38df1d400a99c348531f5","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-12-08T14:01:29Z","title_canon_sha256":"021c8e7c271c33dc1862342ad3b68c1b4c42ae4dc4844ed62bb192cdf8717956"},"schema_version":"1.0","source":{"id":"0912.1498","kind":"arxiv","version":1}},"canonical_sha256":"912fc3c9e9dd35d678500f9c2dd78d713c6c0b7ed95c8a7ea8eb4e37f479e6c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"912fc3c9e9dd35d678500f9c2dd78d713c6c0b7ed95c8a7ea8eb4e37f479e6c2","first_computed_at":"2026-05-18T02:10:25.700300Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:25.700300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EdAYi/7/zDBa8mNuuSDMGJb7RMD5YP2FT8cF1KIhJXfHRGu/0a7zLeMMCJzIjdUwBd3knQZN8io7L6j2RBKIDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:25.700787Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.1498","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:428dc660727e471a894d7c8a9ea4ec92a9822ba9436ddc0792d6bf3597b4fc2e","sha256:76c7f8c9c86ed080b229f09cbd6e00093b39090de31b2e6718e7c989b87b0ee1"],"state_sha256":"942e19445badff903e18719e8b3d545b490c14ff5e4e184ef162ab2b89380998"}