1. KU Leuven Leuven Belgium
2. Department of Space Science and CSPAR University of Alabama in Huntsville Huntsville AL USA
3. Southwest Research Institute San Antonio TX USA
4. Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
5. Heliophysics Division NASA Goddard Space Flight Center Greenbelt MD USA
6. Department of Physics Catholic University of America Washington DC WA USA