Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Los Alamos Natl Laboratory, Los Alamos, NM, United States
University of Montana, Missoula, MT, United States
Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Space Science Center, University of New Hampshire Main Campus, Durham, NH, United States
Department of Astrophysical Sciences and Office of the Vice President for the Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ, United States