Jovian proton aurora

Details Jovian proton aurora Jovian proton aurora

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...24...78h&link_type=abstract

Icarus, vol. 24, Jan. 1975, p. 78-85.

Astronomy and Astrophysics

Astronomy

4

Astronomical Models, Atmospheric Models, Auroras, Jupiter Atmosphere, Polar Caps, Proton Precipitation, Electron Precipitation, Lyman Alpha Radiation, Planetary Magnetospheres, Proton Energy, Secondary Emission

Scientific paper

Auroral and polar cap emissions in a model Jovian atmosphere are determined for proton precipitation. The incident protons, which are characterized by representative spectra, are degraded in energy by applying the continuous slowing down approximation. All secondary and higher generation electrons are assumed to be absorbed locally and their contributions to the total emissions are included. Volume emission rates are calculated from the total direct excitation rates with corrections for cascading applied. Results show that most molecular hydrogen and helium emissions for polar cap precipitation are below the ambient dayglow values. Charge capture by precipitating protons is an important source of Lyman alpha and Balmer alpha emissions and offers a key to the detection of large fluxes of low energy protons.

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