1. LESIA, Observatoire de Paris, CNRS, PSL, UPMC; Univerité Paris Diderot; Meudon France
2. Department of Atmospheric, Oceanic and Space Sciences; University of Michigan; Ann Arbor Michigan USA
3. National Institute of Information and Communications Technology; Tokyo Japan
4. Department of Physics and Astronomy; University of Leicester; Leicester UK
5. Department of Physics and Astronomy; University College London; London UK
6. Centre for Planetary Sciences at UCL/Birkbeck; London UK
7. Department of Physics; Lancaster University; Lancaster UK
8. Department of Space Science and Center for Space Plasma and Aeronomic Research; University of Alabama in Huntsville; Huntsville Alabama USA