1. Department of Physics, University of South Florida, Tampa, FL 33620, USA
2. Department of Astronomy and Joint Space-Science Institute, University of Maryland, College Park, MD 20742, USA
3. NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
4. Wyle Science, Technology and Engineering Group, 1290 Hercules Avenue, Houston, TX 77058, USA
5. Department of Physics, University of California, Santa Barbara, CA 93106, USA
6. Department of Physics, University of Sydney, Sydney, NSW 2006, Australia
7. Department of Physics, University of North Carolina, Chapel Hill, NC 27599, USA
8. Max-Planck-Institute for Extraterrestrial Physics (MPE), Giessenbachstrasse 1, D-85748 Garching, Germany
9. Department of Physics, Rhodes College, Memphis, TN 38112, USA
10. Department of Astronomy, University of Arizona, Tucson, AZ 85721, USA (Deceased)