{"paper":{"title":"A view of the evolution of a CME and the associated wave-trains at high spatial and temporal resolution","license":"http://creativecommons.org/licenses/by/4.0/","headline":"High-resolution Metis images reveal distinct plasma motions inside a coronal mass ejection and fast circular wavefronts at 500 km/s on its flank.","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Burtovoi, C. Sasso, F. Frassati, F. Landini, G. Jerse, G. Russano, H. Cremades, L. Abbo, M. Pancrazzi, M. Romoli, M. Temmer, M. Uslenghi, R. Susino, S. Mancuso, V. Andretta, Y. De Leo","submitted_at":"2026-04-14T14:56:30Z","abstract_excerpt":"Context. Studying the kinematic and dynamic evolution of fast eruptive events from the middle to high solar corona is a primary objective of the Metis coronagraph on Solar Orbiter. During perihelion, Metis acquires visible light images at a 20s cadence, reaching a spatial resolution of around 2000 km at 0.28 au. This enables capturing coronal mass ejections (CMEs) and transient structures with unprecedented spatial and temporal resolution. Aims. On October 8-9, 2022, an extensive CME was observed by Metis at 0.3 au (resolution: 4.4 $10^{3}$ km/pixel). We aim to exploit this high resolution to "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Metis observations resolve the CME's fine structure and internal plasma motions. The detection of circular, fast-propagating wavefronts (500 km/s, 3 minute period) at the western flank suggests wave excitation and magnetic reconfiguration processes.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The identification of the wavefronts as quasi-periodic propagating fast modes assumes a specific magnetic field geometry and plasma beta regime in the middle corona that is not directly measured in the data.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"High-resolution coronagraph images resolve CME substructures and fast circular wave-trains interpreted as quasi-periodic propagating fast magnetosonic modes.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"High-resolution Metis images reveal distinct plasma motions inside a coronal mass ejection and fast circular wavefronts at 500 km/s on its flank.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"b2dc4609878bc62039d5122598eb9e57cd1b60cef103432663f0d34123d1b861"},"source":{"id":"2604.12836","kind":"arxiv","version":1},"verdict":{"id":"2cfd0b45-3022-4513-b5f3-ef819358b368","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T14:08:20.858182Z","strongest_claim":"Metis observations resolve the CME's fine structure and internal plasma motions. The detection of circular, fast-propagating wavefronts (500 km/s, 3 minute period) at the western flank suggests wave excitation and magnetic reconfiguration processes.","one_line_summary":"High-resolution coronagraph images resolve CME substructures and fast circular wave-trains interpreted as quasi-periodic propagating fast magnetosonic modes.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The identification of the wavefronts as quasi-periodic propagating fast modes assumes a specific magnetic field geometry and plasma beta regime in the middle corona that is not directly measured in the data.","pith_extraction_headline":"High-resolution Metis images reveal distinct plasma motions inside a coronal mass ejection and fast circular wavefronts at 500 km/s on its flank."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.12836/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":48,"sample":[{"doi":"","year":2025,"title":"2025, A&A, 701, A199","work_id":"a92c7d0e-a05c-4004-879f-75f42109e52d","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"2020, A&A, 642, A10 Auchère, F., Soubrié, E., Pelouze, G., & Buchlin, É","work_id":"8ec3a69c-a162-4380-848a-3058a82d3c2e","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2025,"title":"2025, ApJ, 985, 145","work_id":"bedd2585-ac13-4280-9876-b9db740ab2a1","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1995,"title":"Brueckner, G. E., Howard, R. A., Koomen, M. J., et al. 1995, Sol. Phys., 162, 357","work_id":"8ec1b828-a43f-424c-8b04-bb56916d08d3","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2024,"title":"M., Temmer, M., V ourlidas, A., et al","work_id":"f18d08a6-e09a-4834-b95a-583e830e9c5b","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":48,"snapshot_sha256":"6624f7e9818f2d1d637eb9db9f89628bdfb4c2e52f6621035a913af22a542a11","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"}