Assessing the high-energy environment of the habitable zone planet LHS 1140b

Exoplanets around nearby small stars present the best opportunity for futureatmospheric studies with the James Webb Space Telescope and the ground basedELTs under construction. The MEarth Project has discovered a rocky planet with aperiod of 24.73 days residing in the habitable zone of the nearby, spun downstar LHS 1140. We seek to detect the high energy emission from LHS 1140 in orderto constrain atmospheric escape and aid future studies of LHS 1140b.satmosphere, which are already planned in the JWST GTO program. In addition, LHS1140 is representative of the low mass, slowly rotating population of M dwarfsin the Milky Way. A deep Xray exposure on this extremum of the stellarpopulation will shed insight into the magnetic dynamo and high energy processes ongoing in these stars. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]