APT1 - Astrophysical Black Holes |
Speaker_ |
Mondal, Soumen |
Co-autors |
Sandip |
Talk _ |
Anlytical and numerical studies of accretion shocks in Pseudo-Kerr Geometry |
Abstract _ |
We devise a pseudo-Kerr potential which is such that a particle moving in this potential behaves as though it is moving around a Kerr black hole. Our potential is valid for off the equatorial plane and gives satisfactory results for -1<a<0.8. We apply this to study standing shocks in Kerr geometry in accretion and winds. We find that as the rotation parameter is increased the shock forms closer to the black hole. We also perform numerical simulations of these shock waves with cooling taken into account and show that high frequency QPOs may be explained by shock-oscillations around a Kerr black hole. |