Department of Space Physics, Institute of Atmospheric Physics CAS, Prague, Czech Republic; Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States
Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States
Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States
Laboratoire de Physique des Plasmas, Saint-Maur Des Fossés Cedex, France
Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States