EGU24-8897, updated on 08 Mar 2024
https://doi.org/10.5194/egusphere-egu24-8897
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under the Creative Commons Attribution 4.0 License.
Turbulent structure of CME-driven sheath regions and their role as energizing charged particles in interplanetary space
- 1University of Helsinki, Finland (emilia.kilpua@helsinki.fi)
- 2University of Turku, Finland
- 3University of Michigan, US
- 4Imperial College London, UK
- 5Space Radiation Laboratory at Caltech, US
Fast Coronal Mass Ejections (CMEs) gather compressed and heated solar wind ahead of them to for turbulent sheath regions. In this presentation we will first demonstrate with recent examples (using e.g. Parker Solar Probe and Solar Orbiter measurements) and the results from a statistical analysis (the ACE spacecraft data) that CME-driven sheath regions can significantly contribute to the acceleration of charged particles in interplanetary space, independent from the effect of the leading shock wave. Then, we will present the key characteristics of sheath regions, e.g., variations of magnetic fied fluctuation and key turbulent properties across the sheath, that can have the key importance for the particle energization.
How to cite: Kilpua, E., Good, S., Vainio, R., Ala-Lahti, M., Dresing, N., Gieseler, J., Koikkalainen, V., Osmane, A., Ruohotie, J., Soljento, J., Trotta, D., Cohen, C., Horbury, T., and Bale, S.: Turbulent structure of CME-driven sheath regions and their role as energizing charged particles in interplanetary space, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-8897, https://doi.org/10.5194/egusphere-egu24-8897, 2024.
