Bremsstrahlung X-rays from Jovian auroral electrons

Details Bremsstrahlung X-rays from Jovian auroral electrons Bremsstrahlung X-rays from Jovian auroral electrons

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9514969b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Sept. 1, 1990, p. 14969-14976.

Astronomy and Astrophysics

Astronomy

17

Auroras, Bremsstrahlung, Electron Beams, Jupiter (Planet), X Rays, Astronomical Spectroscopy, Electron Distribution, Electron Energy, Energy Distribution, Planetary Magnetospheres

Scientific paper

The spectrum of X-rays from the planet Jupiter is calculated according to an auroral electron beam model. The electrons are assumed to be accelerated by a field-aligned potential drop and penetrate into the atmosphere as a Maxwellian beam of primaries which are scattered, degraded in energy, and merged with a population of ionization secondaries having a power law energy distribution. The soft X-rays observed by the Einstein Observatory satellite are due to bremsstrahlung from the secondary electrons in the H2 atmosphere. The X-ray intensity is best reconciled with a beam of primaries having a characteristic energy 30-100 keV and penetrating the homopause with an auroral energy flux typically of 10-20 ergs/sq cm s but no greater than 50 ergs/sq cm s.

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