1. Department of PhysicsUniversity of New Brunswick Fredericton New Brunswick Canada
2. IRAP, Université Paul Sabatier/CNRS Toulouse France
3. Space Sciences LaboratoryUniversity of California Berkeley USA
4. NASA Goddard Space Center Greenbelt Maryland USA
5. Department of Physics and AstronomyUniversity of Iowa Iowa City Iowa USA
6. Laboratory for Atmospheric and Space PhysicsUniversity of Colorado Boulder Boulder Colorado USA