SOME GENERAL-RELATIVISTIC EFFECTS ON THE DYNAMICS OF FLUID DISKS ROTATING AROUND A SCHWARZSCHILD BLACK-HOLE

In this paper we present various classes of solutions for perfect flui d disks rotating around Schwarzschild black holes. We study the profil es of pressure, density and specific angular momentum and the formatio n of cusp-like structures at the inner edge of the disks. Using the tr ial function method, we calculate the frequency of the global axi-symm etric oscillations. We compare the results with those of the correspon ding Newtonian calculations to find the general relativistic effects.