Estimation and comparison of quasilinear electron heating in the shock foot at Jupiter and earth

Physics

Scientific paper

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Electron Energy, Electrostatic Waves, Jupiter (Planet), Plasma Interactions, Shock Wave Interaction, Ion Beams, Mathematical Models, Plasma Waves, Solar Wind, Wave Propagation, Whistlers, Jupiter, Comparisons, Electrons, Heating, Models, Electrostatic Effects, Shock, Waves, Ions, Energy, Calculations, Amplitude, Distribution, Whistlers, Voyager Missions, Plasma Wave Instrument, Pws, Temperature, Bowshock, Turbulence, Isotropy

Scientific paper

The authors develop a simple quasilinear model to estimate the electron heating that occurs in the foot of a supercritical, quasiperpendicular shock through interactions with electrostatic waves generated by reflected ions. At earth the increase in electron thermal energy calculated using the measured wave amplitudes is negligible, while at Jupiter it is comparable with the observed temperature gain across the shock. The anisotropic quasilinear heating should destabilize whistler mode waves in the foot. These have been detected by the plasma wave instrument on Voyager with amplitudes sufficient to isotropize the electron distribution.

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