Joule heating of Io's ionosphere by unipolar induction currents

Details Joule heating of Io's ionosphere by unipolar induction currents Joule heating of Io's ionosphere by unipolar induction currents

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...44..296h&link_type=abstract

(IAU, American Astronomical Society, COSPAR, University of Hawaii, and NASA, Colloquium on the Satellites of Jupiter, 5th, Kailu

Astronomy and Astrophysics

Astronomy

3

Electric Current, Induction Heating, Io, Ionospheric Heating, Ohmic Dissipation, Mathematical Models, Resistance Heating, Sulfur Dioxides

Scientific paper

Electrical induction in Io's ionosphere, due to the corotating plasma bound to the Jovian magnetosphere, is one possible source for the attainment of the high temperatures suggested by the large scale height of Io's ionosphere. Unipolar induction models are constructed to calculate ionospheric joule heating numerically, whose heating rates lie between 10 to the -9th and 10 to the -8th W/cu m. The binding and coupling of the ionosphere is due to the dense, and possibly ionized, neutral SO2 atmosphere, and there appears to be no need to postulate the existence of an intrinsic Ionian magnetic field in order to retain the observed ionnosphere.

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