University of Michigan Ann Arbor, Ann Arbor, MI, United States
University of Michigan Ann Arbor, Ann Arbor, MI, United States
Heliophysics Sci. Div., NASA Goddard Space Flight Center, Greenbelt, MD, United States
University of Michigan Ann Arbor, Ann Arbor, MI, United States
University of Michigan Ann Arbor, Ann Arbor, MI, United States
University of Michigan Ann Arbor, Ann Arbor, MI, United States
Johns Hopkins Univ/APL, Laurel, MD, United States
Johns Hopkins Univ/APL, Laurel, MD, United States
Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC, United States; Columbia University of New York, Palisades, NY, United States