L. Sanna¹, Giovanni Lapenta², Raymond J Walker³, Mostafa El-Alaoui⁴, Jean Berchem⁵ and David Schriver⁵, (1)Divisione Spazio, Torino, Italy, (2)Katholieke Universiteit Leuven, Department of Mathematics, Leuven, Belgium, (3)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, (4)UCLA, Physics and Astronomy, Los Angeles, CA, United States, (5)University of California Los Angeles, Department of Physics and Astronomy, Los Angeles, CA, United States