New aspects in the theory of magnetic winds from massive hot stars

This thesis discusses the influence of magnetic fields on the instability of line-driven winds in O-stars and Wolf-Rayet stars. This combination is an important concept to understand the strong, observed winds from Wolf-Rayet stars. In the second part of the thesis a model is derived which describes the wind outside the equatorial plane. This model allows to use the simple approach of an ordinary differential equation instead of a 2-dim. partial differential equation.