1. Astronomy Department University of Maryland College Park MD USA
2. NASA Goddard Space Flight Center Greenbelt MD USA
3. NASA Ames Research Center Mountain View CA USA
4. Swedish Institute of Space Physics Uppsala Sweden
5. Laboratoire de Physique des Plasmas CNRS/Sorbonne Université/Université Paris‐Saclay/Observatoire de Paris/ Ecole Polytechnique Institut Polytechnique de Paris Paris France