1. Center for Space Science and Engineering Research (Space@VT) Virginia Tech Blacksburg VA USA
2. Department of Physics and Astronomy William Marsh Rice University Houston TX USA
3. Birkeland Centre for Space Science University of Bergen Bergen Norway
4. Arctic Geophysics University Centre in Svalbard Longyearbyen Norway
5. Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary Physics University of California Los Angeles CA USA
6. Department of Physics Augsburg University Minneapolis MN USA