X-ray Emission from OB Stars: Epsilon Ori

GTXray emission from Early Type stars is still one of the most puzzlingaspects of stellar Xray astronomy. None of the proposed models forexplaining the origin of the Xray emission has been fully successful,whilst strong evidence of a richness of phenomena characterizing theatmoshperes of these stars comes from the recent ASCA observations. Wepropose a short (10,000 s) observation of Epsilon Ori to obtain amoderate resolutino spectrum with high statistics with EPIC and a highresolution, moderate statistics spectrum with RGS in order to gainsubstantial hints in the understanding of the physical phenomenaresponsible for the heating of the Xray emitting regions. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]