1. Space Sciences LaboratoryUniversity of California Berkeley California USA
2. Astronomy and Space Physics DepartmentNational Taras Shevchenko University of Kiev Kiev Ukraine
3. Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary PhysicsUniversity of California Los Angeles California USA
4. CEA, DAM, DIF Arpajon France
5. LPC2E/CNRS‐University of Orleans Orleans France