X‐ray emission from scattering and fluorescence of solar X‐rays at Venus and Mars
Authors:
- 1 August 2001
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 28 (15) , 3043-3046
Abstract
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.Keywords
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