1. School of Electronic Information; Wuhan University; Wuhan China
2. Laboratoire de Physique des Plasmas; CNRS-Ecole Polytechnique-UPMC; Palaiseau France
3. Bartol Research Institute and Department of Physics and Astronomy; University of Delaware; Newark Delaware USA
4. Institute of Space Science and Technology; Nanchang University; Nanchang China
5. Department of Physics and Astronomy; University of California; Los Angeles California USA
6. School of Space and Environment; Beihang University; Beijing China
7. Department of Physics; University of New Hampshire; Durham New Hampshire USA
8. LASP; University of Colorado Boulder; Boulder Colorado USA
9. Swedish Institute of Space Physics; Uppsala Sweden
10. Royal Institute of Technology; Stockholm Sweden
11. Department of Earth, Planetary, and Space Sciences; University of California; Los Angeles California USA
12. Space Research Institute; Austrian Academy of Sciences; Graz Austria
13. Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
14. NASA; Goddard Space Flight Center; Greenbelt Maryland USA
15. Southwest Research Institute; San Antonio Texas USA