{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:7YSC6NG7DYPNGWH67PTZPNAW7P","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":"a1dbe99c7a346779c1cf625f3dfa39d8a27a80acad3a7d890e63b2417650e608","cross_cats_sorted":["physics.plasm-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2025-02-11T21:02:08Z","title_canon_sha256":"1cf5c1fe7533158b272a57bfabbb4b6ac8630ad137a69fac5eadf1a69a2f9eec"},"schema_version":"1.0","source":{"id":"2502.07953","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.07953","created_at":"2026-07-05T10:13:12Z"},{"alias_kind":"arxiv_version","alias_value":"2502.07953v1","created_at":"2026-07-05T10:13:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.07953","created_at":"2026-07-05T10:13:12Z"},{"alias_kind":"pith_short_12","alias_value":"7YSC6NG7DYPN","created_at":"2026-07-05T10:13:12Z"},{"alias_kind":"pith_short_16","alias_value":"7YSC6NG7DYPNGWH6","created_at":"2026-07-05T10:13:12Z"},{"alias_kind":"pith_short_8","alias_value":"7YSC6NG7","created_at":"2026-07-05T10:13:12Z"}],"graph_snapshots":[{"event_id":"sha256:931b5361134a9a33ea1d94c1c41f03959a12d306ee6751e4b7fd4ac60ccb54af","target":"graph","created_at":"2026-07-05T10:13:12Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2502.07953/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ion-acoustic waves are routinely observed at collisionless shocks and could be an important source of resistivity. The source of instability and the effects of the waves are not fully understood. We show, using Magnetospheric Multiscale (MMS) mission observations and numerical modeling, that across low Mach number shocks a large relative drift between protons and alpha particles develops, which can be unstable to the proton-alpha streaming instability. The results from linear analysis and a numerical simulation show that the resulting waves agree with the observed wave properties. The generate","authors_text":"Ahmad Lalti, Daniel B. Graham, Yuri V. Khotyaintsev","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2025-02-11T21:02:08Z","title":"Ion-Acoustic Waves and the Proton-Alpha Streaming Instability at Collisionless Shocks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.07953","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":"sha256:2537874ec171cdd8c2cf470f16f2a9d382194c4a987a6e849732cc3770c503fe","target":"record","created_at":"2026-07-05T10:13:12Z","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":"a1dbe99c7a346779c1cf625f3dfa39d8a27a80acad3a7d890e63b2417650e608","cross_cats_sorted":["physics.plasm-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.space-ph","submitted_at":"2025-02-11T21:02:08Z","title_canon_sha256":"1cf5c1fe7533158b272a57bfabbb4b6ac8630ad137a69fac5eadf1a69a2f9eec"},"schema_version":"1.0","source":{"id":"2502.07953","kind":"arxiv","version":1}},"canonical_sha256":"fe242f34df1e1ed358fefbe797b416fbf61df30d6250183186153c055e56c37e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe242f34df1e1ed358fefbe797b416fbf61df30d6250183186153c055e56c37e","first_computed_at":"2026-07-05T10:13:12.833760Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:13:12.833760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ux2BnUylssgSb6FpzQCkJYb6NkzBAuSerwYbx7mJMPKeb+pHlklZQgx3wfJ5mWaFNRZWeDFgi/y9DAP1xH4aBA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:13:12.834232Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.07953","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2537874ec171cdd8c2cf470f16f2a9d382194c4a987a6e849732cc3770c503fe","sha256:931b5361134a9a33ea1d94c1c41f03959a12d306ee6751e4b7fd4ac60ccb54af"],"state_sha256":"cac2aa4d5a4d34c31f9be394187c70c6398eefed6e6805a5974071f3723a61db"}