Characterizing the Shocked Gas of Rigidly Rotating Magnetosphere Systems

Sigma Ori Etype objects are a class of massive, rapidly rotating stars thatexhibit magnetically confined disks supplied by mass loss from their centralstar. Discrepancies between the observed disk geometry, the detailed locationand amount of shocked gas in these disks, and the magnetic field morphology ofthese systems with predictions from rigidfield hydrodynamical models suggestsour basic understanding of sigma Ori Etype objects is incomplete. We propose touse XMMNewton to diagnose the shocked gas component in three sigma Ori Etypeobjects and compare their Xray properties to other sigma Ori E systems tobetter understand the class as a whole. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]