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On the Response of Protons to Dynamical Reconfigurations of Mercury's Magnetosphere

Hadid, L. Z.; Aizawa, S.; Delcourt, D.

We examine the dynamics of protons during tail-like to dipole-like reconfigurations of Mercury's magnetosphere. Such reconfigurations that frequently occur in the highly dynamical Hermean environment are accompanied by induced electric fields leading to short-lived convection enhancements. Using test particle calculations, we show that, under the …

BepiColombo Mio Observations of Low-Energy Ions During the First Mercury Flyby: Initial Results

Persson, Moa; Saito, Yoshifumi; Delcourt, Dominique +14 more

We present initial results of low-energy ion observations from BepiColombo's first Mercury flyby. Unprecedentedly high time resolution measurements of low energy ions at Mercury by BepiColombo Mio reveal rapid (a few seconds) and large (1-2 orders of magnitude) fluctuations of ion flux around the magnetopause and within the magnetosphere. Around t…