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