| Institution: | Center for Space Research and Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139–4307, USA;Space Radiation Laboratory, California Institute of Technology, MC 220-47, Pasadena, CA 91125, USA;Department of Physics, United States Military Academy, West Point, NY 10996, USA;Institute for Theoretical Physics and Department of Physics, University of California, Santa Barbara, Santa Barbara, CA 93106, USA;Astronomical Institute 'Anton Pannekoek' and Center for High-Energy Physics, Kruislaan 403, 1098 SJ Amsterdam, the Netherlands;Department of Physics, University of Alabama Huntsville, Huntsville, AL 35899, USA;Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, MS 78, Cambridge, MA 02138, USA;Institute of Space and Astronautical Science, Sagamihara, Japan |
