1. Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya 84/32, 117997 Moscow, Russia
2. Univ. Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
3. Higher School of Economics, Myasnitskaya 20, 101000 Moscow, Russia
4. I.E. Tamm Theoretical Physics Division of P.N. Lebedev Institute of Physics, Leninskii pr. 53, 119991 Moscow, Russia
5. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA
6. Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027, USA
7. Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse 1, Garching, D-85748, Germany
8. Space Sciences Laboratory, University of California, 7 Gauss Way, Berkeley, CA 94720-7450, USA
9. MIT Kavli Institute, 77 Massachusetts Ave, Cambridge, MA 02139 USA