1. Department of Astronomy University of Maryland College Park MD USA
2. Planetary Magnetospheres Laboratory NASA Goddard Space Flight Center Greenbelt MD USA
3. Laboratoire Atmosphères, Milieux et Observations Spatiales IPSL CNRS UVSQ UPMC Paris France
4. Space Research Corporation Annapolis MD USA
5. Southwest Research Institute San Antonio TX USA
6. Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
7. Department of Physics and Astronomy Howard University Washington DC USA
8. Department of Physics and Astronomy University of Iowa Iowa City IA USA