1. School of Physics and Astronomy University of Leicester Leicester UK
2. ESA/ESTEC Noordwijk The Netherlands
3. William B. Hanson Center for Space Sciences University of Texas at Dallas Richardson TX USA
4. Institut de Recherche en Astrophysique et Planétologie (IRAP) CNRS Université Paul Sabatier Toulouse France
5. Mullard Space Science Laboratory University College London UK
6. Imperial College London UK
7. Applied Physics Laboratory Johns Hopkins University Laurel MD USA