{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:L62QGIG3FGJZYHDTOCV545CZCF","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":"52e5d56814764bf045d4d48446517db9ec23ce7d6db64ee2b4e53572b6a8b9bb","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-04T20:10:10Z","title_canon_sha256":"b1e9210f43a6cbf17592ac16caaf961988d9e3731b326533d173a56e86e52373"},"schema_version":"1.0","source":{"id":"1508.00904","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00904","created_at":"2026-05-18T01:30:57Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00904v2","created_at":"2026-05-18T01:30:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00904","created_at":"2026-05-18T01:30:57Z"},{"alias_kind":"pith_short_12","alias_value":"L62QGIG3FGJZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"L62QGIG3FGJZYHDT","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"L62QGIG3","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:cf7612f3f5a1293e0429921346f4bdcb42bc98b0bbd56dbdd99f9d5e08474c63","target":"graph","created_at":"2026-05-18T01:30:57Z","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":"We characterize magnetically driven accretion at radii between 1 au and 100 au in protoplanetary discs, using a series of local non-ideal magnetohydrodynamic (MHD) simulations. The simulations assume a Minimum Mass Solar Nebula (MMSN) disc that is threaded by a net vertical magnetic field of specified strength. Confirming previous results, we find that the Hall effect has only a modest impact on accretion at 30 au, and essentially none at 100 au. At 1-10 au the Hall effect introduces a pronounced bi-modality in the accretion process, with vertical magnetic fields aligned to the disc rotation s","authors_text":"Geoffroy Lesur, Jacob B. Simon, Matthew W. Kunz, Philip J. Armitage","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-04T20:10:10Z","title":"Magnetically driven accretion in protoplanetary discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00904","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":"sha256:1540f57a3c6db9937a4a4806b5af1cfe03c65144908ba83d36ada0706d5d46be","target":"record","created_at":"2026-05-18T01:30:57Z","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":"52e5d56814764bf045d4d48446517db9ec23ce7d6db64ee2b4e53572b6a8b9bb","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-04T20:10:10Z","title_canon_sha256":"b1e9210f43a6cbf17592ac16caaf961988d9e3731b326533d173a56e86e52373"},"schema_version":"1.0","source":{"id":"1508.00904","kind":"arxiv","version":2}},"canonical_sha256":"5fb50320db29939c1c7370abde74591148dcb9ab596fd64adb97e947c50c7259","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5fb50320db29939c1c7370abde74591148dcb9ab596fd64adb97e947c50c7259","first_computed_at":"2026-05-18T01:30:57.967738Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:57.967738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C1M9hCwbKjmDEnP/AjcjaQ7/UUDMmP3XZJ0syBb2rE1theL1wUMwcQChEsF9MIayHg5XlDB0RGonFBrOTszqCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:57.968166Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.00904","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1540f57a3c6db9937a4a4806b5af1cfe03c65144908ba83d36ada0706d5d46be","sha256:cf7612f3f5a1293e0429921346f4bdcb42bc98b0bbd56dbdd99f9d5e08474c63"],"state_sha256":"f0947867ed6e9ebe856ce22149c8fffc29ce09d97ae362672cc2ad501d4df505"}