1. Theoretical Physics IV: Plasma-Astroparticle Physics, Faculty for Physics & Astronomy , Ruhr-Universität Bochum, D-44780 Bochum, Germany
2. Ruhr Astroparticle and Plasma Physics Center (RAPP Center) , Ruhr-Universität Bochum, D-44780 Bochum, Germany
3. IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
4. Department of Astronomy, University of Wisconsin-Madison , Madison, WI 53706, USA
5. Department of Physics, University of Wisconsin-Madison , Madison, WI 53706, USA
6. Institute for Astro- & Particle Physics, University of Innsbruck , A-6020 Innsbruck, Austria
7. Dutch Institute for Fundamental Energy Research, Eindhoven University of Technology , NL-5612 AJ Eindhoven, the Netherlands
8. Eindhoven University of Technology , NL-5600 MB Eindhoven, the Netherlands