Turbulent heating of Jupiter's middle magnetosphere

Details Turbulent heating of Jupiter's middle magnetosphere Turbulent heating of Jupiter's middle magnetosphere

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm21a0522s&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SM21A-0522

Physics

5443 Magnetospheres (2756), 6220 Jupiter, 7863 Turbulence

Scientific paper

In this paper we give a possible explanation for the high ion temperatures of ~108 K measured in the middle magnetosphere of Jupiter [Frank et al. 2002, Frank and Patterson, 2002]. In the absence of a significant heat source much lower temperatures are expected due to adiabatic cooling of the expanding magnetosphere. We show that the weak magnetohydrodynamic turbulent fluctuations observed in the middle magnetosphere dissipate energy at a rate that can account for the high ion temperatures. We present a one dimensional temperature equation as a function of radial distance and find a temperature profile in good agreement with observations by the Galileo spacecraft.

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