Precipitation fluxes of energetic electrons at Jupiter - an estimated upper limit

Details Precipitation fluxes of energetic electrons at Jupiter - an estimated upper limit Precipitation fluxes of energetic electrons at Jupiter - an estimated upper limit

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.1409t&link_type=abstract

Journal of Geophysical Research, vol. 84, Apr. 1, 1979, p. 1409-1418.

Physics

Electron Flux Density, Electron Precipitation, Energetic Particles, Energy Transfer, Ionospheric Electron Density, Jupiter Atmosphere, Atmospheric Models, Auroras, Bremsstrahlung, Electron Density Profiles, Electron Diffusion, Geomagnetic Latitude, Planetary Ionospheres, Space Density

Scientific paper

Divine's (1976) model for the observed energetic electron fluxes in the inner Jovian magnetosphere is used to calculate space densities, and the combined source and loss term is evaluated for steady-state radial diffusion conserving the first and second adiabatic invariants. Upper-limit estimates for the ionospheric precipitation fluxes at various values of L and over various electron energy ranges are derived by assuming that contributions to the source term are negligible and that particle precipitation due to pitch-angle diffusion in the loss cone is the main contributor to the loss term. The energy deposition rates corresponding to these precipitated particles are estimated, along with the bremsstrahlung X-ray emissions that should result. It is found that the X-ray emissions should be 5 to 6 orders of magnitude below the reported upper observational limit.

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