1. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
2. Department of PhysicsAugsburg University Minneapolis MN USA
3. Southwest Research Institute San Antonio TX USA
4. Department of Physics and AstronomyUniversity of Texas at San Antonio San Antonio TX USA
5. Department of Earth, Planetary, and Space SciencesUniversity of California Los Angeles CA USA
6. Institute for Geophysics and Planetary PhysicsUniversity of California Los Angeles CA USA
7. Laboratory for Atmospheric and Space PhysicsUniversity of Colorado at Boulder Boulder CO USA
8. Department of Space and Plasma PhysicsRoyal Institute of Technology Stockholm Sweden
9. Space Science CenterUniversity of New Hampshire Durham NH USA