ARTICLE | doi:10.20944/preprints202207.0343.v1
Subject: Physical Sciences, Astronomy & Astrophysics Keywords: Massive particle; Static black hole; f(R) gravity; Pseudo-Newtonian Potential
Online: 22 July 2022 (14:14:20 CEST)
In this paper, we investigated the trajectory of the massive particle in the vicinity of a general spherical symmetric black hole. Also, in the framework of general sphericalily symmetric black hole, Pseudo-Newtonian potential (PNP) and effective potentials has been investigated. As an example, static spherically symmetric black hole in f(R) gravity is considered and presented the brief discussion on the structure of spacetime and horizons. We calculated energy and angular momentum in the framework of general relativity as well as in Pseudo-Newtonian theory. A graphical comparison of angular momentum in this both framework has been studied.
ARTICLE | doi:10.20944/preprints202207.0134.v1
Subject: Physical Sciences, Astronomy & Astrophysics Keywords: perihelion shift; bending of light; Reissner-Nordstrom Black Hole
Online: 8 July 2022 (06:44:31 CEST)
Study of perihelion shift of Mercury and deflection angle are important aspects for the verification of general relativity. For Schwarzschild geometry both the perihelion shift and weak deflection angle were independent of charge whereas for ReissnerNordstrom space-time charge should effect on both the perihelion shift and deflection angle. This paper shows the perihelion shift decreases with the increases of charge. Effect of other parameters like angular momentum, mass parameter, distance of closest approach on perihelion precession and deflection angle has also discussed. This paper also includes the graphical behavior which verifes our theoretical calculations.