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Consequences of hydromagnetic waves on magnetospheric particle dynamics
Authors:R Gendrin
Institution:(1) Centre de Recherches en Physique de l'Environnement Centre National d'Etudes de Télécommunications, 38-40 rue du Général Leclerc, 92131 Issy-les-Moulineaux, France
Abstract:Since long ULF waves are known to play a dominant role in the dynamics of energetic protons. Recent observations have shown that they also contribute to the heating and/or acceleration of both heavy ions and electrons. This review will deal with all the aspects of wave particle interactions that involve electromagnetic ULF waves in the equatorial region of the magnetosphere. We will consider successively Pc-3-4-5 pulsations, magnetosonic waves and ion cyclotron waves. In the latter case, for which both the experimental data and the theoretical interpretation are more advanced, we will discuss the linear, quasi-linear and nonlinear aspects of the interaction. Results of recent numerical simulations of this type of interaction will also be reported. A final section will be devoted to ULF waves observed in the vicinity of the Io torus.
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