1. Space Science and Engineering DivisionSouthwest Research Institute San Antonio Texas USA
2. Department of Physics and AstronomyUniversity of Texas at San Antonio San Antonio Texas USA
3. Institute of Geophysics and Planetary PhysicsUniversity of California Los Angeles California USA
4. Department of Physics and AstronomyUniversity of Iowa Iowa City Iowa USA
5. Los Alamos National Laboratory Los Alamos New Mexico USA
6. Department of Astrophysical SciencePrinceton University Princeton New Jersey USA
7. Physics DepartmentAuburn University Auburn Alabama USA
8. Institute for the Study of Earth, Oceans, and SpaceUniversity of New Hampshire Durham New Hampshire USA
9. Department of Physics and AstronomyUniversity of Minnesota, Twin Cities Minneapolis Minnesota USA