1. Max Planck Institute for Solar System Research Göttingen Germany
2. Department of Earth and Environmental Sciences Ludwig Maximilian University of Munich Munich Germany
3. Space Research Institute Russian Academy of Sciences Moscow Russia
4. Moscow Institute of Physics and Technology Moscow Russia
5. Astronomy and Space Physics Department Kyev Taras Shevchenko University Kyev Ukraine
6. Boston University Boston MA USA
7. Applied Physics Laboratory Johns Hopkins University Baltimore MD USA
8. School of Physics and Astronomy University of Southampton Southampton UK
9. Department of Earth and Planetary Science University of Tokyo Tokyo Japan
10. Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow Russia
11. National Institute of Information and Communications Technology Koganei Japan
12. Department of Geophysics Tohoku University Sendai Japan
13. Space Sciences, Technologies and Astrophysics Research Institute, LPAP Université de Liège Belgium
14. The Blackett Laboratory Imperial College London London UK