Name of the Speaker(s): Stefan Appl
Institution: Observatoire de Strasbourg
Title of the communication: Relativistic Accretion Discs and Magnetized Jets
Preliminary abstract (12 lines max.):
The structure of stationary transsonic accretion discs around rotating black holes is calculated. The discs possess ion temperatures in the range $10^{11} - 10^{12}$ K. Disks around rapidly rotating black holes are hotter and deposit less angular momentum onto the central object than those around non-rotating black holes.
A model for stationary collimated relativistic MHD jets is presented. It provides a consistent kinematical and magnetic structure. Relations between the mass flux, Lorentz factor, Mach numbers are given. Relativistic MHD jets are shown to be more stable than their hydrodynamic counterparts.