{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q36YXK5E5L7PP4DVVWNROZOQSG","short_pith_number":"pith:Q36YXK5E","canonical_record":{"source":{"id":"1907.02978","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-05T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"87d75283ce23e2d4e0fb4a6c6146f68c940391965859e0701ebc48780784f7ee","abstract_canon_sha256":"5b1f13f9a3536393a3f61b3eced3147899b3df9af5d6aad3c9cb38e4e5ef9800"},"schema_version":"1.0"},"canonical_sha256":"86fd8baba4eafef7f075ad9b1765d091bfa276603fab2e33c767a239494de4db","source":{"kind":"arxiv","id":"1907.02978","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02978","created_at":"2026-05-17T23:41:21Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02978v1","created_at":"2026-05-17T23:41:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02978","created_at":"2026-05-17T23:41:21Z"},{"alias_kind":"pith_short_12","alias_value":"Q36YXK5E5L7P","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q36YXK5E5L7PP4DV","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q36YXK5E","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q36YXK5E5L7PP4DVVWNROZOQSG","target":"record","payload":{"canonical_record":{"source":{"id":"1907.02978","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-05T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"87d75283ce23e2d4e0fb4a6c6146f68c940391965859e0701ebc48780784f7ee","abstract_canon_sha256":"5b1f13f9a3536393a3f61b3eced3147899b3df9af5d6aad3c9cb38e4e5ef9800"},"schema_version":"1.0"},"canonical_sha256":"86fd8baba4eafef7f075ad9b1765d091bfa276603fab2e33c767a239494de4db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:21.447105Z","signature_b64":"dosBiQLxAtwwyLMjDvNb1l8GLdfjUv5gkfeBs5Vaa/5gHslYt8IfSupXLaCaTsPUskl8jhbN7pR0ADbR9oImAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86fd8baba4eafef7f075ad9b1765d091bfa276603fab2e33c767a239494de4db","last_reissued_at":"2026-05-17T23:41:21.446487Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:21.446487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.02978","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":"2026-05-17T23:41:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5xuCeKeD1VzvzxWf0jDUvaWUei1s/NXWTDX/3i21XSJODFRtWHDTwmQEF82Z8Jig9vgJe1ZYS9jZauIQivr6DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:02:12.675185Z"},"content_sha256":"ec0fc8ce2a3c5aca4e3da9033c099c8ca6557e805239ae29be052bac28e997d3","schema_version":"1.0","event_id":"sha256:ec0fc8ce2a3c5aca4e3da9033c099c8ca6557e805239ae29be052bac28e997d3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q36YXK5E5L7PP4DVVWNROZOQSG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Planetary Magnetic Field Control of Ion Escape from Weakly Magnetized Planets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"David Brain, Hilary Egan, Riku Jarvinen, Yingjuan Ma","submitted_at":"2019-07-05T18:00:03Z","abstract_excerpt":"Intrinsic magnetic fields have long been thought to shield planets from atmospheric erosion via stellar winds; however, the influence of the plasma environment on atmospheric escape is complex. Here we study the influence of a weak intrinsic dipolar planetary magnetic field on the plasma environment and subsequent ion escape from a Mars sized planet in a global three-dimensional hybrid simulation. We find that increasing the strength of a planet's magnetic field enhances ion escape until the magnetic dipole's standoff distance reaches the induced magnetosphere boundary. After this point increa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02978","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":"2026-05-17T23:41:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RIM0IsC3+zpntcm14w3aF3GN+PneErdO81S8e44IYkVvKKYFsC3IuGBs2gmva1ALp34V6+Ya1B4U0rf7rKoQDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:02:12.675681Z"},"content_sha256":"46d3e3dbf3593d8922c7bf8b4708d2bbcb82932c1349745373cae765bee02212","schema_version":"1.0","event_id":"sha256:46d3e3dbf3593d8922c7bf8b4708d2bbcb82932c1349745373cae765bee02212"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q36YXK5E5L7PP4DVVWNROZOQSG/bundle.json","state_url":"https://pith.science/pith/Q36YXK5E5L7PP4DVVWNROZOQSG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q36YXK5E5L7PP4DVVWNROZOQSG/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":"2026-05-26T03:02:12Z","links":{"resolver":"https://pith.science/pith/Q36YXK5E5L7PP4DVVWNROZOQSG","bundle":"https://pith.science/pith/Q36YXK5E5L7PP4DVVWNROZOQSG/bundle.json","state":"https://pith.science/pith/Q36YXK5E5L7PP4DVVWNROZOQSG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q36YXK5E5L7PP4DVVWNROZOQSG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q36YXK5E5L7PP4DVVWNROZOQSG","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":"5b1f13f9a3536393a3f61b3eced3147899b3df9af5d6aad3c9cb38e4e5ef9800","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-05T18:00:03Z","title_canon_sha256":"87d75283ce23e2d4e0fb4a6c6146f68c940391965859e0701ebc48780784f7ee"},"schema_version":"1.0","source":{"id":"1907.02978","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02978","created_at":"2026-05-17T23:41:21Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02978v1","created_at":"2026-05-17T23:41:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02978","created_at":"2026-05-17T23:41:21Z"},{"alias_kind":"pith_short_12","alias_value":"Q36YXK5E5L7P","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q36YXK5E5L7PP4DV","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q36YXK5E","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:46d3e3dbf3593d8922c7bf8b4708d2bbcb82932c1349745373cae765bee02212","target":"graph","created_at":"2026-05-17T23:41:21Z","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":"Intrinsic magnetic fields have long been thought to shield planets from atmospheric erosion via stellar winds; however, the influence of the plasma environment on atmospheric escape is complex. Here we study the influence of a weak intrinsic dipolar planetary magnetic field on the plasma environment and subsequent ion escape from a Mars sized planet in a global three-dimensional hybrid simulation. We find that increasing the strength of a planet's magnetic field enhances ion escape until the magnetic dipole's standoff distance reaches the induced magnetosphere boundary. After this point increa","authors_text":"David Brain, Hilary Egan, Riku Jarvinen, Yingjuan Ma","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-05T18:00:03Z","title":"Planetary Magnetic Field Control of Ion Escape from Weakly Magnetized Planets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02978","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:ec0fc8ce2a3c5aca4e3da9033c099c8ca6557e805239ae29be052bac28e997d3","target":"record","created_at":"2026-05-17T23:41:21Z","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":"5b1f13f9a3536393a3f61b3eced3147899b3df9af5d6aad3c9cb38e4e5ef9800","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-05T18:00:03Z","title_canon_sha256":"87d75283ce23e2d4e0fb4a6c6146f68c940391965859e0701ebc48780784f7ee"},"schema_version":"1.0","source":{"id":"1907.02978","kind":"arxiv","version":1}},"canonical_sha256":"86fd8baba4eafef7f075ad9b1765d091bfa276603fab2e33c767a239494de4db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86fd8baba4eafef7f075ad9b1765d091bfa276603fab2e33c767a239494de4db","first_computed_at":"2026-05-17T23:41:21.446487Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:21.446487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dosBiQLxAtwwyLMjDvNb1l8GLdfjUv5gkfeBs5Vaa/5gHslYt8IfSupXLaCaTsPUskl8jhbN7pR0ADbR9oImAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:21.447105Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.02978","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec0fc8ce2a3c5aca4e3da9033c099c8ca6557e805239ae29be052bac28e997d3","sha256:46d3e3dbf3593d8922c7bf8b4708d2bbcb82932c1349745373cae765bee02212"],"state_sha256":"db43255b816f0571caf102dc855d376dc9e148bfce70714803a626f9192630f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3cG0xVHh3wSb9PDDpFlv8MLb2tUKN1FicxRHG3E18i2Ww2EroTJlXeo1rCqgGxzA1Vw/W3WcqFFarSeF/3sdDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:02:12.679988Z","bundle_sha256":"90874a155bdea4ae0e4b7748118482322b8fc82667734355bfa505b25d2427b5"}}