1. Belgian Institute for Space Aeronomy Brussels Belgium
2. Institut de Recherche en Astrophysique et PlanétologieUniversity of Toulouse UPS‐OMP UMR 5277 Toulouse France
3. CNRS, IRAP Toulouse France
4. Department of Physics and AstronomyUniversity of Leicester Leicester UK
5. Laboratoire de Physique des Plasmas Vélizy France
6. Max‐Planck Institute for Solar Systems Research Katlenburg‐Lindau Germany
7. Department of Physics and TechnologyUniversity of Bergen Bergen Norway