{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:6536T7S6MVALGEIV2NJTPP2T26","short_pith_number":"pith:6536T7S6","canonical_record":{"source":{"id":"1901.09638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-01-28T13:26:50Z","cross_cats_sorted":[],"title_canon_sha256":"48471ccddcf86ab6ba2e4904e40e51f5a313f5d155271e8382a44a82134781a5","abstract_canon_sha256":"54540499aafa6b6f14f0d3d95fa4e335985d86bcc73f20352f4e12f38e391fc9"},"schema_version":"1.0"},"canonical_sha256":"f777e9fe5e6540b31115d35337bf53d78f220430b46767a544f7779d86bca1fa","source":{"kind":"arxiv","id":"1901.09638","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.09638","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1901.09638v1","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.09638","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"6536T7S6MVAL","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"6536T7S6MVALGEIV","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"6536T7S6","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:6536T7S6MVALGEIV2NJTPP2T26","target":"record","payload":{"canonical_record":{"source":{"id":"1901.09638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-01-28T13:26:50Z","cross_cats_sorted":[],"title_canon_sha256":"48471ccddcf86ab6ba2e4904e40e51f5a313f5d155271e8382a44a82134781a5","abstract_canon_sha256":"54540499aafa6b6f14f0d3d95fa4e335985d86bcc73f20352f4e12f38e391fc9"},"schema_version":"1.0"},"canonical_sha256":"f777e9fe5e6540b31115d35337bf53d78f220430b46767a544f7779d86bca1fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:42.431871Z","signature_b64":"EU2UusmzDibCqUAhUi8wa7yt1mQ40MtD3/O6gU46ozNvoOlgP6wCTeWPG3FWPJIz2dwNj/5UlIgCNmHKnJmTBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f777e9fe5e6540b31115d35337bf53d78f220430b46767a544f7779d86bca1fa","last_reissued_at":"2026-05-17T23:42:42.431231Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:42.431231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.09638","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":"2026-05-17T23:42:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PXbsS3nUoS1nl5JlIbUEs9ppfTtw2dvQ32oS39NFTIt70sFQNZ6nBvRR6t/PwUlghb/UopEsGaCNx0epPT15Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T10:52:28.249712Z"},"content_sha256":"27449a4b5847f17e1dfc83c6cc9bbcc092c7d4dd8ce684696cbbff0f45d9b106","schema_version":"1.0","event_id":"sha256:27449a4b5847f17e1dfc83c6cc9bbcc092c7d4dd8ce684696cbbff0f45d9b106"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:6536T7S6MVALGEIV2NJTPP2T26","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Particle-in-Cell Simulations of Plasma Dynamics in Cometary Environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.space-ph","authors_text":"Chaitanya Prasad Sishtla, Erwin Laure, Stefano Markidis, Steven W. D. Chien, Vyacheslav Olshevsky","submitted_at":"2019-01-28T13:26:50Z","abstract_excerpt":"We perform and analyze global Particle-in-Cell (PIC) simulations of the interaction between solar wind and an outgassing comet with the goal of studying the plasma kinetic dynamics of a cometary environment. To achieve this, we design and implement a new numerical method in the iPIC3D code to model outgassing from the comet: new plasma particles are ejected from the comet \"surface\" at each computational cycle. Our simulations show that a bow shock is formed as a result of the interaction between solar wind and outgassed particles. The analysis of distribution functions for the PIC simulations "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09638","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":"2026-05-17T23:42:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MCpRaWrMnmeXiuJLhBKysCcwrVoYO5cKugYZIkT5JkCY2t40mlCTFFmsc/BXvflLFUdUVRag+HH6FnY4lztsBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T10:52:28.250358Z"},"content_sha256":"29eb10d21467d53b65079a3dbb75024d8b33712370488f04c2a2cf1426024f16","schema_version":"1.0","event_id":"sha256:29eb10d21467d53b65079a3dbb75024d8b33712370488f04c2a2cf1426024f16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6536T7S6MVALGEIV2NJTPP2T26/bundle.json","state_url":"https://pith.science/pith/6536T7S6MVALGEIV2NJTPP2T26/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6536T7S6MVALGEIV2NJTPP2T26/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":"2026-06-06T10:52:28Z","links":{"resolver":"https://pith.science/pith/6536T7S6MVALGEIV2NJTPP2T26","bundle":"https://pith.science/pith/6536T7S6MVALGEIV2NJTPP2T26/bundle.json","state":"https://pith.science/pith/6536T7S6MVALGEIV2NJTPP2T26/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6536T7S6MVALGEIV2NJTPP2T26/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:6536T7S6MVALGEIV2NJTPP2T26","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":"54540499aafa6b6f14f0d3d95fa4e335985d86bcc73f20352f4e12f38e391fc9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-01-28T13:26:50Z","title_canon_sha256":"48471ccddcf86ab6ba2e4904e40e51f5a313f5d155271e8382a44a82134781a5"},"schema_version":"1.0","source":{"id":"1901.09638","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.09638","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1901.09638v1","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.09638","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"6536T7S6MVAL","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"6536T7S6MVALGEIV","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"6536T7S6","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:29eb10d21467d53b65079a3dbb75024d8b33712370488f04c2a2cf1426024f16","target":"graph","created_at":"2026-05-17T23:42:42Z","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 perform and analyze global Particle-in-Cell (PIC) simulations of the interaction between solar wind and an outgassing comet with the goal of studying the plasma kinetic dynamics of a cometary environment. To achieve this, we design and implement a new numerical method in the iPIC3D code to model outgassing from the comet: new plasma particles are ejected from the comet \"surface\" at each computational cycle. Our simulations show that a bow shock is formed as a result of the interaction between solar wind and outgassed particles. The analysis of distribution functions for the PIC simulations ","authors_text":"Chaitanya Prasad Sishtla, Erwin Laure, Stefano Markidis, Steven W. D. Chien, Vyacheslav Olshevsky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-01-28T13:26:50Z","title":"Particle-in-Cell Simulations of Plasma Dynamics in Cometary Environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09638","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":"sha256:27449a4b5847f17e1dfc83c6cc9bbcc092c7d4dd8ce684696cbbff0f45d9b106","target":"record","created_at":"2026-05-17T23:42:42Z","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":"54540499aafa6b6f14f0d3d95fa4e335985d86bcc73f20352f4e12f38e391fc9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-01-28T13:26:50Z","title_canon_sha256":"48471ccddcf86ab6ba2e4904e40e51f5a313f5d155271e8382a44a82134781a5"},"schema_version":"1.0","source":{"id":"1901.09638","kind":"arxiv","version":1}},"canonical_sha256":"f777e9fe5e6540b31115d35337bf53d78f220430b46767a544f7779d86bca1fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f777e9fe5e6540b31115d35337bf53d78f220430b46767a544f7779d86bca1fa","first_computed_at":"2026-05-17T23:42:42.431231Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:42.431231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EU2UusmzDibCqUAhUi8wa7yt1mQ40MtD3/O6gU46ozNvoOlgP6wCTeWPG3FWPJIz2dwNj/5UlIgCNmHKnJmTBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:42.431871Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.09638","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27449a4b5847f17e1dfc83c6cc9bbcc092c7d4dd8ce684696cbbff0f45d9b106","sha256:29eb10d21467d53b65079a3dbb75024d8b33712370488f04c2a2cf1426024f16"],"state_sha256":"eefb2beaeaed2c371c9d22561b6ad678dedabdebc7a1d656873d2e50b3281dc9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VBzkjJRqJ6J7bRRR0pcseF7OxTy3tzfXEERmkOKzCYzGCrXOBn67E/hgcQlwAklC+5jJ4bXpwt8lXm7c87xmAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T10:52:28.254953Z","bundle_sha256":"3937507144e760b926d52606c38874140a01430977714e13a78d0f4f80b46894"}}