1. Department of Electrical Engineering Democritus University of Thrace Xanthi Greece
2. Laboratory for Atmospheric & Space Physics University of Colorado Boulder Boulder CO USA
3. Department of Physics Auburn University Auburn AL USA
4. Formerly at the Democritus University of Thrace Xanthi Greece
5. Now at Department of Physics University of Helsinki Helsinki Finland
6. School of Space and Environment Beihang University Beijing China
7. Department of Physics and Astronomy West Virginia University Morgantown WV USA
8. University of California at Los Angeles Los Angeles CA USA
9. TU Braunschweig Braunschweig Germany
10. Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan
11. Kyoto University Kyoto Japan
12. Japan Aerospace Exploration Agency (ISAS/JAXA) Sagamihara Japan