Analytical study of standing shocks around black hole

Abstract

Shocks from around black holes as the matter slows down by centifugal barrier. At the shocks, kinetic energy is converted into thermal energy and hard-X rays, outflows etc. are produced which are observed. We compute the locations of these shocks analytically by using a set of approximations and found that they match very well with those obtained by numerical techniques. From the shock properties we compute QPO oscillation frequencies and outflow rate in the jets.