1. Laboratoire de Physique des Plasmas, UMR7648, CNRS, Ecole Polytechnique, UPMC, Université Paris 06, University of Paris-Sud; Paris France
2. Space Research Institute, Austrian Academy of Sciences; Graz Austria
3. Physics Department and Space Science Center; University of New Hampshire; Durham NH USA
4. Swedish Institute of Space Physics; Uppsala Sweden
5. Laboratory for Atmospheric and Space Physics; University of Colorado Boulder; Boulder CO USA
6. NASA Goddard Space Flight Center; Greenbelt MD USA
7. Royal Institute of Technology; Stockholm Sweden
8. Southwest Research Institute; San Antonio TX USA
9. Department of Earth, Planetary and Space Sciences; University of California; Los Angeles CA USA
10. Applied Physics Laboratory, The Johns Hopkins University; Laurel MD USA
11. Institute for Space and Astronautical Science; Sagamihara Japan
12. Institut de Recherche en Astrophysique et Planétologie, CNRS UMR5277/Université Paul Sabatier; Toulouse France
13. Space Sciences Department; The Aerospace Corporation; El Segundo CA USA