Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 38, issue 6
Articles | Volume 38, issue 6
https://doi.org/10.5194/angeo-38-1217-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-38-1217-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 38, issue 6
Regular paper
 | 
24 Nov 2020
Regular paper |  | 24 Nov 2020

A deep insight into the ion foreshock with the help of test particle two-dimensional simulations

Philippe Savoini and Bertrand Lembège

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Short summary
Numerical simulations have been used to investigate some acceleration mechanisms in order to explain the origin of the energized back-streaming ions observed at the Earth's bow shock. This paper used test particles in two different configurations with self-consistent and fixed shock front profiles. The comparison of these two configurations allows us to analyze, in detail, the impact of the shock front nonstationarity and the role of the built-up electric field in the acceleration process.
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