Relativistic electrons and whistlers in Jupiter's magnetosphere

Details Relativistic electrons and whistlers in Jupiter's magnetosphere Relativistic electrons and whistlers in Jupiter's magnetosphere

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7623124b&link_type=abstract

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Computer Science

Electrons, Jupiter Atmosphere, Planetary Magnetospheres, Relativistic Particles, Whistlers, Electron Diffusion, Magnetic Fields, Magnetospheric Electron Density, Radiation Belts, Wave Propagation

Scientific paper

The path-integrated gain of parallel propagating whistlers driven unstable by an anisotropic distribution of relativistic electrons in the stable trapping region of Jupiter's inner magnetosphere was computed. The requirement that a gain of 3 e-foldings of power balance the power lost by imperfect reflection along the flux tube sets a stably-trapped flux of electrons which is close to the non-relativistic result. Comparison with measurements shows that observed fluxes are near the stably-trapped limit, which suggests that whistler wave intensities may be high enough to cause significant diffusion of electrons accounting for the observed reduction of phase space densities. A crude estimate of the wave intensity necessary to diffuse electrons on a radial diffusion time scale yields a lower limit for the magnetic field fluctuation intensity.

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