Corotating convection revisited

Details Corotating convection revisited Corotating convection revisited

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..178h&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, March 1987, p. 178-181.

Astronomy and Astrophysics

Astronomy

16

Convection Currents, Corotation, Jupiter Atmosphere, Magnetospheric Ion Density, Plasma Dynamics, Toroidal Plasmas, Astronomical Models, Io

Scientific paper

The corotating convection model invokes a systematic large-scale pattern of plasma motion through the Jovian magnetosphere, a pattern fixed in corotating (System III) coordinates and established by an observed longitudinal asymmetry of the S+ ion distribution in the inner Io torus. In its various versions published to date, the corotating convection model would preserve this longitudinal asymmetry throughout the magnetospheric convection system; the model is thus in conflict with the high degree of longitudinal symmetry that is observed to exist in the hot outer Io torus and presumed to exist also in the magnetosphere outside the torus. The authors propose to solve this difficulty by superimposing on the corotating convection system a strong retrograde flow confined to the torus region, representing the corotation lag associated with ion production and charge exchange in the Io torus.

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