Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3043c&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 15, p. 3043-3046
Physics
15
Atmospheric Composition And Structure: Airglow And Aurora, Atmospheric Composition And Structure: Transmission And Scattering Of Radiation, Planetology: Solar System Objects: Mars, Planetology: Solar System Objects: Venus
Scientific paper
X-ray emission is modeled and x-ray intensities are predicted for Venus and Mars. Two emission mechanisms are studied: (1) elastic scattering of solar x-rays by atmospheric neutrals, (2) absorption of solar x-rays in either the carbon or oxygen K-shells followed by fluorescent emission of x-rays. The carbon and oxygen atoms reside in the carbon dioxide molecules. We predict total soft x-ray intensities of approximately 0.67 R for Venus and 0.15 R for Mars, corresponding to total soft x-ray luminosities of about 35 MW and 2.5 MW, respectively. These luminosities exceed the x-ray luminosities expected from the solar wind charge exchange mechanism.
Cravens Thomas E.
Maurellis Ahilleas N.
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