Isothermal plasma wave properties of the Schwarzschild de-Sitter black hole in a Veselago medium

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.     

Response of streamflow to climate variability in the source region of Jhelum River Basin in Kashmir valley,India

Natural Hazards - Successful management of the water resources directly depends on our understanding of the heterogeneity of changing climate and consequent response of annual and seasonal...