Plasma in the Jovian magnetosphere

Details Plasma in the Jovian magnetosphere Plasma in the Jovian magnetosphere

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7524605g&link_type=abstract

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Computer Science

Jupiter (Planet), Magnetospheric Ion Density, Planetary Magnetospheres, Centrifugal Force, Ion Recombination, Magnetohydrodynamic Stability, Planetary Rotation, Plasma Density

Scientific paper

It is shown that the plasma in Jupiter's ionosphere is collisionless above a certain level. In the outer magnetosphere, where the rotational force dominates the gravitational force, the collisionless plasma has a beam-like distribution and gives rise to a two-stream instability. This leads to trapping of plasma in the centrifugally dominated region of the magnetosphere. Plasma is lost by recombination. Equilibrium-trapped particle densities are calculated by requiring a balance between trapping by wave-particle interaction and loss by recombination. The results are compared with recent observations from Pioneer 10. It is suggested that the observations require an unexplained ion-heating mechanism. Some consequences of the model are discussed.

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