A Rigidly Rotating Magnetosphere Model for the Circumstellar Environments of Magnetic OB Stars

摘要

We report on a new model for the circumstellar environments of rotating, magnetic hot stars. This model predicts the channeling of wind plasma into a corotating magnetosphere, where – supported against gravity by centrifugal forces – it can steadily accumulate over time. We apply the model to the B2p star σ Ori E, demonstrating that it can simultaneously reproduce the spectroscopic, photometric and magnetic variations exhibited by the star.