AuthorCo-AuthorsDuration
Bobomurat AhmedovAhmadjon Abdujabbarov

Title
Electromagnetic Fields and Plasma Magnetospheres of Compact Objects in General Relativity

Abstract
Analytical solutions of Maxwell equations in background spacetime of black hole in alternative theories of gravity immersed in external uniform magnetic field have been found. Influence of magnetic and parameters of alternative theories of gravity on effective potential of the radial motion of charged test particle around slowly rotating black hole in alternative theories of gravity immersed in uniform magnetic field has been investigated by using Hamilton-Jacobi method. Exact analytical solution for dependence of the radius of the innermost stable circular orbits (ISCO) rISCO from parameters of alternative theories of gravity for motion of test particle around isolated black hole in alternative theories of gravity has been derived. For example, it has been shown that radius r_ISCO is monotonically growing with the increase of module of brane tidal charge. Comparison of the predictions on rISCO of the brane world model and of the observational results of ISCO from relativistic accretion disks around black holes provided upper limit for brane tidal charge < 10^9cm^2.