Catholic University of America, Department of Physics, 200 Hannan Hall, 620 Michigan Ave, Washington, DC 20064, USA; NASA Goddard Space Flight Center, Lab for Solar and Space Physics, Code 612.1, Greenbelt, MD 20771, USA
NASA Goddard Space Flight Center, Lab for Solar and Space Physics, Code 612.1, Greenbelt, MD 20771, USA
NASA Goddard Space Flight Center, Lab for Solar and Space Physics, Code 612.1, Greenbelt, MD 20771, USA