1. Space Science Center; University of New Hampshire; Durham New Hampshire USA
2. The Aerospace Corporation; El Segundo California USA
3. High Energy Astrophysics Division; Harvard-Smithsonian Center for Astrophysics; Cambridge Massachusetts USA
4. Department of Atmospheric, Oceanic and Space Sciences; University of Michigan; Ann Arbor Michigan USA
5. Goddard Space Flight Center; Greenbelt Maryland USA
6. Department of Nuclear Engineering; University of Tennessee, Knoxville; Knoxville Tennessee USA
7. Analytic Services Inc.; Arlington Virginia USA
8. Southwest Research Institute, Earth Oceans and Space Science; University of New Hampshire; Durham New Hampshire USA