Stirring a Corona with a Super Earth

Details Stirring a Corona with a Super Earth Stirring a Corona with a Super Earth

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..102k&link_type=abstract

XMM-Newton Proposal ID #06526401

Physics

Stars, White Dwarfs, Solar System, Corot-7 B1C1

Scientific paper

Recently, two extremely close-in planets were discovered around the K0V star CoRoT-7, at distances of 0.017 and 0.046 AU, with 5 and 8 Earth masses respectively. There is thus intense interest in this system. X-ray observations will be an extremely useful and sensitive tool to probe it, because the nearness of the planets to the host star implies significant structural changes to the corona due to the interactions of the stellar and planetary magnetospheres. We propose to observe this system 5 times at the joint conjunctions of the planets for a total of 50 ksec, and 4 further times when the outer planet is at quadrature, for 20 ksec. We expect to detect the signature of the interaction unambiguously and will model the system with numerical MHD simulations.

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