Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop...10d&link_type=abstract
XMM-Newton Proposal ID #06004601
Astronomy and Astrophysics
Astrophysics
Stars, White Dwarfs, Solar System, Mars
Scientific paper
We propose to utilize the unique opportunity provided by the presence of Mars Express for the first ever combination of remote X-ray observations of solar wind charge exchange (SWCX) emission with simultaneous measurements of the solar wind at Mars. XMM-Newton is by far the best X-ray satellite for this kind of study. In a previous Mars observation, it has already provided the first direct, unambiguous detection of SWCX emission from the exosphere of another planet. This finding has consequences for X-ray astrophysics in general (plasma diagnostics and soft X-ray background), and is important for planetary evolution (atmospheric outgassing). It opens up a novel possibility of remote global imaging of planetary exospheres and their spatial and temporal variability.
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