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GEOPHYSICAL RESEARCH LETTERS,
VOL. 28, NO. 15,
PP. 3043-3046, 2001
doi:10.1029/2001GL013021
X‐ray emission from scattering and fluorescence of solar X‐rays at Venus and Mars
Dept. of Physics and Astronomy, University of Kansas, Lawrence
Space Research Organization Netherlands, Utrecht, The Netherlands
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.
Received 14 February 2001; accepted 14 May 2001; .
Citation: (2001), X‐ray emission from scattering and fluorescence of solar X‐rays at Venus and Mars, Geophys. Res. Lett., 28(15), 3043–3046, doi:10.1029/2001GL013021.
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