1. School of Physics, Astronomy and Computational Sciences George Mason University Fairfax Virginia USA
2. Space Science Division Naval Research Laboratory Washington District of Columbia USA
3. Deceased 30 December 2006
4. Computational Physics, Inc. Springfield Virginia USA
5. Space Science Applications Laboratory Aerospace Corporation El Segundo California USA
6. The Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA
7. LASP University of Colorado Boulder Boulder Colorado USA
8. ASTRA, LLC Boulder Colorado USA
9. Research School of Physics and Engineering Australian National University Canberra ACT Australia