{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:NSWWEXMTNSGMF73EKBX3ZFG2QL","short_pith_number":"pith:NSWWEXMT","schema_version":"1.0","canonical_sha256":"6cad625d936c8cc2ff64506fbc94da82d6aad33467f662ef1680db5f40e35764","source":{"kind":"arxiv","id":"1804.10582","version":1},"attestation_state":"computed","paper":{"title":"Dusk Over Dawn O$_2$ Asymmetry in Europa's Near-Surface Atmosphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Apurva V. Oza, Carl Schmidt, Francois Leblanc, Jean-Yves Chaufray, Ludivine Leclercq, Robert E. Johnson, Timothy A. Cassidy","submitted_at":"2018-04-27T16:32:01Z","abstract_excerpt":"The evolution of Europa's water-product exosphere over its 85-hour day, based on current models, has not been shown to exhibit any diurnal asymmetries. Here we simulate Europa's exosphere using a 3-D Monte Carlo routine including, for the first time, the role of Europa's rotation on the evolution of exospheric molecules throughout the orbit. We focus on O$_2$, sputtered by a trailing hemisphere source with a temperature-dependence under isotropic plasma conditions. We find that the O$_2$ component, while global, is not homogenous in Europa local time. Rather, the O$_2$ accumulates at the dusk "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1804.10582","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-04-27T16:32:01Z","cross_cats_sorted":[],"title_canon_sha256":"36013ff9b30f4bb851ea80254e9c3329c2b982dd759c586bc3b952ee84f5677f","abstract_canon_sha256":"509d4894cc3d8c58851932da918c69851d761f400bedcedee1c4a7df948e00c2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:44.049359Z","signature_b64":"sYYvQZZQB0xj6V5B+l/pSQHg4TSl6d3AWEzHVXgsTCevndmr9Lp1nqGDPN9BhKMm6DIPVdYKitmkpGe63bv6Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6cad625d936c8cc2ff64506fbc94da82d6aad33467f662ef1680db5f40e35764","last_reissued_at":"2026-05-17T23:52:44.048733Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:44.048733Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dusk Over Dawn O$_2$ Asymmetry in Europa's Near-Surface Atmosphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Apurva V. Oza, Carl Schmidt, Francois Leblanc, Jean-Yves Chaufray, Ludivine Leclercq, Robert E. Johnson, Timothy A. Cassidy","submitted_at":"2018-04-27T16:32:01Z","abstract_excerpt":"The evolution of Europa's water-product exosphere over its 85-hour day, based on current models, has not been shown to exhibit any diurnal asymmetries. Here we simulate Europa's exosphere using a 3-D Monte Carlo routine including, for the first time, the role of Europa's rotation on the evolution of exospheric molecules throughout the orbit. We focus on O$_2$, sputtered by a trailing hemisphere source with a temperature-dependence under isotropic plasma conditions. We find that the O$_2$ component, while global, is not homogenous in Europa local time. Rather, the O$_2$ accumulates at the dusk "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.10582","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1804.10582","created_at":"2026-05-17T23:52:44.048818+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.10582v1","created_at":"2026-05-17T23:52:44.048818+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.10582","created_at":"2026-05-17T23:52:44.048818+00:00"},{"alias_kind":"pith_short_12","alias_value":"NSWWEXMTNSGM","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_16","alias_value":"NSWWEXMTNSGMF73E","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_8","alias_value":"NSWWEXMT","created_at":"2026-05-18T12:32:40.477152+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL","json":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL.json","graph_json":"https://pith.science/api/pith-number/NSWWEXMTNSGMF73EKBX3ZFG2QL/graph.json","events_json":"https://pith.science/api/pith-number/NSWWEXMTNSGMF73EKBX3ZFG2QL/events.json","paper":"https://pith.science/paper/NSWWEXMT"},"agent_actions":{"view_html":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL","download_json":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL.json","view_paper":"https://pith.science/paper/NSWWEXMT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.10582&json=true","fetch_graph":"https://pith.science/api/pith-number/NSWWEXMTNSGMF73EKBX3ZFG2QL/graph.json","fetch_events":"https://pith.science/api/pith-number/NSWWEXMTNSGMF73EKBX3ZFG2QL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL/action/storage_attestation","attest_author":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL/action/author_attestation","sign_citation":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL/action/citation_signature","submit_replication":"https://pith.science/pith/NSWWEXMTNSGMF73EKBX3ZFG2QL/action/replication_record"}},"created_at":"2026-05-17T23:52:44.048818+00:00","updated_at":"2026-05-17T23:52:44.048818+00:00"}