(Astrophysics Space Science, 2011) M. Sharif; Ifra Noureen
In this paper, we study wave properties of isothermal plasma for
the Schwarzschild de-Sitter black hole in a Veselago medium. We
use ADM 3 + 1 formalism to formulate general relativistic magnetohydrodynamical
(GRMHD) equations for the Schwarzschild de-Sitter
spacetime in Rindler coordinates. Further, Fourier analysis of the linearly
perturbed GRMHD equations for the rotating (non-magnetized
and magnetized) background is taken whose determinant leads to a
dispersion relation. We investigate wave properties by using graphical
representation of the wave vector, the refractive index, change
in refractive index, phase and group velocities. Also, the modes of
wave dispersion are explored. The results indicate the existence of the
Veselago medium.