Is Jupiter's ionosphere a significant plasma source for its magnetosphere?

Details Is Jupiter's ionosphere a significant plasma source for its magnetosphere? Is Jupiter's ionosphere a significant plasma source for its magnetosphere?

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91..351n&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Jan. 1, 1986, p. 351-354.

Physics

Plasma Physics

19

Collisionless Plasmas, Ionospheric Electron Density, Jupiter Atmosphere, Magnetospheric Electron Density, Magnetospheric Ion Density, Planetary Ionospheres, Planetary Magnetospheres, Plasma Dynamics, Astronomical Models, Centrifugal Force, Electron Energy, Plasma Physics, Steady State, Jupiter, Ionosphere, Plasma, Source, Magnetosphere, Models, Electrons, Wind, Hydrogen, Ions, Escape, Flux, Energy, Calculations, Temperature

Scientific paper

A semikinetic model was used to study the steady state, collisionless, polar wind outflow from the Jovian polar caps. H+ escape fluxes and energies were calculated for a range of conditions, including several values of the ambient electron temperature, different hot electron populations, and both with and without the effects of the centrifugal force. The calculations indicate that if hot electron populations exist over the Jovian polar caps, as they do on earth, polar wind escape fluxes of the order of 108cm-2s-1 are possible. When integrated over the polar cap area, escape fluxes of this order of magnitude imply an ionospheric source strength of 2×1028ions/s, which is comparable to the present estimate of the total magnetospheric plasma source population. Therefore, the ionosphere may play an important role in populating the Jovian magnetosphere, specifically the "hidden", low energy, light ion component of the population.

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