Coronal Mass Ejection driven sheath regions and proton acceleration
- 1University of Helsinki, Department of Physics, Helsinki, Finland (emilia.kilpua@helsinki.fi)
- *A full list of authors appears at the end of the abstract
Coronal Mass Ejections (CMEs) are large-scale eruptions from the Sun that drive shocks and turbulent sheaths ahead of them. Parker Solar Probe, Solar Orbiter and BepiColombo have recently observed several shocks/sheaths closer to the Sun than the Earth’s orbit. These studies have revealed enhanced energetic proton fluxes from in-situ observations in interplanetary space also in the sheaths preceding slow CMEs. In this presentation we discuss the internal small-scales sheath structures (e.g., mini flux ropes) and embedded magnetic fluctuations as well as related energization mechanisms. The results suggest that the CME-driven sheaths can have an important role in the acceleration of energetic particles.
R. Vainio, S. Good, C. Cohen, N. Dresin, J. Gieseler, J. Ruohotie, D. Trotta, Emma Davies, R. Forsyth, B. Lavraud, E. Asvetari, D. Morosan, J. Pomoell, D. Price, D. Heyner, T. Horbury, S. Bale, E. Christian, M. Hill, D. McComas, R. McNutt, N. Schwadron, V. Angelini, H. O'Brien, V. Evans, J. Rodriguez-Pacheco, R. Gómez Herrero, G. Ho, R. Wimmer-Schweingruber,
How to cite: Kilpua, E. and the Emilia Kilpua: Coronal Mass Ejection driven sheath regions and proton acceleration, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-4437, https://doi.org/10.5194/egusphere-egu23-4437, 2023.
