Proton aurora on Jupiter's nightside

Details Proton aurora on Jupiter's nightside Proton aurora on Jupiter's nightside

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..365g&link_type=abstract

Geophysical Research Letters, vol. 7, May 1980, p. 365-368.

Physics

2

Auroras, Jupiter Atmosphere, Proton Precipitation, Electron Precipitation, Ion Cyclotron Radiation, Particle Diffusion, Plasma Heating, Toruses, X Rays, Jupiter, Protons, Nightside, Ultraviolet, Emissions, Plasmas, Torus, Radiation, Electrons, Flux Tube, Particles, Flux, Energy, Mathematical Models, Resonance, Electric Fields, Models, Density, Volcanism, Frequency

Scientific paper

An intense auroral-type emission from the dark side of Jupiter, for which it is asserted that the necessary energy is due to proton precipitation rather than electron precipitation is studied. Attention is given to particle precipitation in the torus, considering upper and lower frequency cut-offs and the resonance energy for interaction of charged particles with electron or ion cyclotron waves. It is noted that a pitch angle diffusion in the torus which is sufficiently strong to make the distribution function nearly isotropic requires rapid electron loss, but that the resultant decrease in the phase space density is not observed. Also considered are the emission of X-rays by precipitating electrons or ions, heating of the torus plasma, and magnetic field perturbations.

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