Stationary Models of Relativistic Viscous Torus

This chapter will be devoted to describing the findings of the study of stationary configurations of a geometrically thick viscous torus in Schwarzschild spacetime. A viscous torus is modelled by a relativistic non-ideal fluid. Using the hyperbolic theory of relativistic hydrodynamics of non-ideal fluids developed using the gradient expansion scheme which is discussed at length in this chapter, it is revealed that morphologies of a viscous torus—both hydrodynamical as well as the magnetised, are significantly modified by shear viscosity and the curvature of the Schwarzschild black hole.