X-ray imaging of the solar wind-Mars interaction

Details X-ray imaging of the solar wind-Mars interaction X-ray imaging of the solar wind-Mars interaction

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1287h&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 7, p. 1287-1290

Astronomy and Astrophysics

Astrophysics

18

Magnetospheric Physics: Solar Wind Interactions With Unmagnetized Bodies, Mathematical Geophysics: Numerical Solutions, Planetology: Solar System Objects: Mars, Solar Physics, Astrophysics, And Astronomy: X Rays, Gamma Rays, And Neutrinos

Scientific paper

Wherever the solar wind meets a neutral atmosphere, X-rays are emitted by charge-exchange processes between heavy solar wind ions and the neutrals. Using an empirical model of the proton flow near Mars we present computer simulations of X-ray emissions from this charge-exchange process in Mars' exosphere. We also discuss implications for remote sensing. Here we show that the total X-ray luminosity near Mars from charge-exchange is greater than 1025eV/s for typical solar wind conditions. This flux is large enough to be detected by an X-ray satellite in Earth orbit. Thus, Mars belongs to a new class of X-ray objects in the sky, together with other non-magnetized planets, such as Venus.

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