Affiliation: | 1.Institute of Astro- and Particle Physics, University of Innsbruck, Technikerstrasse 25/8, 6020, Innsbruck, Austria ;2.Space Science Center and Department of Physics, University of New Hampshire, Durham, NH, USA ;3.Space Research Institute, Austrian Academy of Sciences, Graz, Austria ;4.NASA Goddard Space Flight Center, Greenbelt, MD, USA ; |