{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:64AGXMHO5IRBSHHSER34HU5M6F","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":"89c950ce2058c9e410d5650ecb7c65c50d5af99c183a45ed4843151d2d8eb872","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-09T17:42:01Z","title_canon_sha256":"ee6dd2a8a13c53d1ff9395a0033fcd4e1a2349a1c013a059007afa2610dfda08"},"schema_version":"1.0","source":{"id":"1901.02845","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02845","created_at":"2026-05-17T23:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02845v1","created_at":"2026-05-17T23:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02845","created_at":"2026-05-17T23:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"64AGXMHO5IRB","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"64AGXMHO5IRBSHHS","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"64AGXMHO","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:ad5bfc21fe22a5c4fb5e0580f15a1fecd9a774008bfbfc240c1230a13a049e4b","target":"graph","created_at":"2026-05-17T23:54:47Z","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":"We present 2.5-D global, ideal MHD simulations of magnetically and rotationally driven protostellar jets from Keplerian accretion discs, wherein only the initial magnetic field strength at the inner radius of the disc, $B_{\\rm i}$, is varied. Using the AMR-MHD code AZEUS, we self-consistently follow the jet evolution into the observational regime ($>10^3\\,\\mathrm{AU}$) with a spatial dynamic range of $\\sim6.5\\times10^5$. The simulations reveal a three-component outflow: 1) A hot, dense, super-fast and highly magnetised 'jet core'; 2) a cold, rarefied, trans-fast and highly magnetised 'sheath' ","authors_text":"David A. Clarke, Jon P. Ramsey","cross_cats":["astro-ph.GA","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-09T17:42:01Z","title":"MHD simulations of the formation and propagation of protostellar jets to observational length scales"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02845","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:b02366dce8b07b3aeec4ccee3ef2fe950fa5fb07f66badaeb6dd9f55cb5841db","target":"record","created_at":"2026-05-17T23:54:47Z","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":"89c950ce2058c9e410d5650ecb7c65c50d5af99c183a45ed4843151d2d8eb872","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-09T17:42:01Z","title_canon_sha256":"ee6dd2a8a13c53d1ff9395a0033fcd4e1a2349a1c013a059007afa2610dfda08"},"schema_version":"1.0","source":{"id":"1901.02845","kind":"arxiv","version":1}},"canonical_sha256":"f7006bb0eeea22191cf22477c3d3acf16196787ad6320f4462f3b5b14754438a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7006bb0eeea22191cf22477c3d3acf16196787ad6320f4462f3b5b14754438a","first_computed_at":"2026-05-17T23:54:47.902304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:47.902304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3gCTZD+/FXzWpC8i1uVqvcBwx48a/hji498JlFThAXhi40q81a8wIXx32SL4X7Iy9DbTt//OIOnr+D7o9ZtwDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:47.902893Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.02845","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b02366dce8b07b3aeec4ccee3ef2fe950fa5fb07f66badaeb6dd9f55cb5841db","sha256:ad5bfc21fe22a5c4fb5e0580f15a1fecd9a774008bfbfc240c1230a13a049e4b"],"state_sha256":"16b3db2515dd9bc27c5ce5389a8f6f3b4e00e145799484f6fce0bb44a7c546b7"}