{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:3E5M5RZBE5JMBYSJ6BEA3X7TKV","short_pith_number":"pith:3E5M5RZB","canonical_record":{"source":{"id":"1505.02158","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-05-08T20:00:25Z","cross_cats_sorted":[],"title_canon_sha256":"2ab7458015f3379094c49a814b4a21a70227dc3b231e279776ae4c32358cf41a","abstract_canon_sha256":"52071e0259bfd0f006ecff685897791d9c3669e2ae9feb9263a1778308a211a1"},"schema_version":"1.0"},"canonical_sha256":"d93acec7212752c0e249f0480ddff355434075e0926c89e076ba1041db0848e9","source":{"kind":"arxiv","id":"1505.02158","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02158","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02158v1","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02158","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"pith_short_12","alias_value":"3E5M5RZBE5JM","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3E5M5RZBE5JMBYSJ","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3E5M5RZB","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:3E5M5RZBE5JMBYSJ6BEA3X7TKV","target":"record","payload":{"canonical_record":{"source":{"id":"1505.02158","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-05-08T20:00:25Z","cross_cats_sorted":[],"title_canon_sha256":"2ab7458015f3379094c49a814b4a21a70227dc3b231e279776ae4c32358cf41a","abstract_canon_sha256":"52071e0259bfd0f006ecff685897791d9c3669e2ae9feb9263a1778308a211a1"},"schema_version":"1.0"},"canonical_sha256":"d93acec7212752c0e249f0480ddff355434075e0926c89e076ba1041db0848e9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:47.950539Z","signature_b64":"KVtBfygD3lThuRwxTCyBn8b6Ad8zas7w0/TZmvsOoO8BQw29TExG71W5FcOzww9LkRcOJzYkU27Mk9UVliUDDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d93acec7212752c0e249f0480ddff355434075e0926c89e076ba1041db0848e9","last_reissued_at":"2026-05-18T01:35:47.949730Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:47.949730Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.02158","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":"2026-05-18T01:35:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MY3SmFjLrAPFS8+FuBte0BF0bhAzJ5j3SxZP7ofBgX2z4wyi3j3IDyJ+oKmZiUbDb5ADBJshvsIkREZiQ8bvDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:17:42.939214Z"},"content_sha256":"5628a5c6457e2f030bac413e9b98cf6f11247275bd269c77efbb96a75acbf81d","schema_version":"1.0","event_id":"sha256:5628a5c6457e2f030bac413e9b98cf6f11247275bd269c77efbb96a75acbf81d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:3E5M5RZBE5JMBYSJ6BEA3X7TKV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic fields in gaps surrounding giant protoplanets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Mark Wardle, Sarah L. Keith","submitted_at":"2015-05-08T20:00:25Z","abstract_excerpt":"Giant protoplanets evacuate a gap in their host protoplanetary disc, which gas must cross before it can be accreted. A magnetic field is likely carried into the gap, potentially influencing the flow. Gap crossing has been simulated with varying degrees of attention to field evolution (pure hydrodynamical, ideal, and resistive MHD), but as yet there has been no detailed assessment of the role of the field accounting for all three key non-ideal MHD effects: Ohmic resistivity, ambipolar diffusion, and Hall drift. We present a detailed investigation of gap magnetic field structure as determined by"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02158","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":"2026-05-18T01:35:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CBq5s4ek+J5eLUeYMZGfhQn5MWGTuxdMkwwvFE+l3wVUVNh9SiR92pbtkwS31Z8feMVpbCGhGkqmDBrjThaxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:17:42.939590Z"},"content_sha256":"223dd4138234d1812ee3718d54403af5971feee3a6c882402a2bc92b453057db","schema_version":"1.0","event_id":"sha256:223dd4138234d1812ee3718d54403af5971feee3a6c882402a2bc92b453057db"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV/bundle.json","state_url":"https://pith.science/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV/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":"2026-06-03T16:17:42Z","links":{"resolver":"https://pith.science/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV","bundle":"https://pith.science/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV/bundle.json","state":"https://pith.science/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3E5M5RZBE5JMBYSJ6BEA3X7TKV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:3E5M5RZBE5JMBYSJ6BEA3X7TKV","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":"52071e0259bfd0f006ecff685897791d9c3669e2ae9feb9263a1778308a211a1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-05-08T20:00:25Z","title_canon_sha256":"2ab7458015f3379094c49a814b4a21a70227dc3b231e279776ae4c32358cf41a"},"schema_version":"1.0","source":{"id":"1505.02158","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.02158","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.02158v1","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.02158","created_at":"2026-05-18T01:35:47Z"},{"alias_kind":"pith_short_12","alias_value":"3E5M5RZBE5JM","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3E5M5RZBE5JMBYSJ","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3E5M5RZB","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:223dd4138234d1812ee3718d54403af5971feee3a6c882402a2bc92b453057db","target":"graph","created_at":"2026-05-18T01:35:47Z","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":"Giant protoplanets evacuate a gap in their host protoplanetary disc, which gas must cross before it can be accreted. A magnetic field is likely carried into the gap, potentially influencing the flow. Gap crossing has been simulated with varying degrees of attention to field evolution (pure hydrodynamical, ideal, and resistive MHD), but as yet there has been no detailed assessment of the role of the field accounting for all three key non-ideal MHD effects: Ohmic resistivity, ambipolar diffusion, and Hall drift. We present a detailed investigation of gap magnetic field structure as determined by","authors_text":"Mark Wardle, Sarah L. Keith","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-05-08T20:00:25Z","title":"Magnetic fields in gaps surrounding giant protoplanets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.02158","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":"sha256:5628a5c6457e2f030bac413e9b98cf6f11247275bd269c77efbb96a75acbf81d","target":"record","created_at":"2026-05-18T01:35:47Z","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":"52071e0259bfd0f006ecff685897791d9c3669e2ae9feb9263a1778308a211a1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-05-08T20:00:25Z","title_canon_sha256":"2ab7458015f3379094c49a814b4a21a70227dc3b231e279776ae4c32358cf41a"},"schema_version":"1.0","source":{"id":"1505.02158","kind":"arxiv","version":1}},"canonical_sha256":"d93acec7212752c0e249f0480ddff355434075e0926c89e076ba1041db0848e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d93acec7212752c0e249f0480ddff355434075e0926c89e076ba1041db0848e9","first_computed_at":"2026-05-18T01:35:47.949730Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:47.949730Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KVtBfygD3lThuRwxTCyBn8b6Ad8zas7w0/TZmvsOoO8BQw29TExG71W5FcOzww9LkRcOJzYkU27Mk9UVliUDDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:47.950539Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.02158","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5628a5c6457e2f030bac413e9b98cf6f11247275bd269c77efbb96a75acbf81d","sha256:223dd4138234d1812ee3718d54403af5971feee3a6c882402a2bc92b453057db"],"state_sha256":"7dd5420935cd84513a5fcffa18d91d3e0691a4acc11f6a7814b916fded064629"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gIcfI6RL6doimAzdwBQnwCjLmT7n+bJ+CwtV7ewpF4iNhD7C0uBxVOHW+PZ8SbUndpxJRkNHcwKETGaRDz4oCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T16:17:42.941509Z","bundle_sha256":"f8b25b3afb05db0f5e236dc2d607c10c9b7036139cc6c3c0fb4e8ccf511398ea"}}