Neutral Particle Motion around a Schwarzschild Black Hole in Modified Gravity |
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Authors: | M Sharif Misbah Shahzadi |
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Institution: | 1.Department of Mathematics,University of the Punjab, Quaid-e-Azam Campus,Lahore,Pakistan |
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Abstract: | We investigate circular motion of neutral test particles on equatorial plane near a black hole in scalar-tensor-vector gravity. We consider three cases (i) α < G/GN (ii) α = G/GN and (iii) α > G/GN to find the regions where motion can exist. The corresponding effective potential, energy, angular momentum and center of mass energy are evaluated. Further, we define four different cases for α > G/GN and identify stable and unstable regions of circular orbits. It is found that circular orbits having zero angular momentum exist at r = αGNM due to repulsive gravity effects. We conclude that the structure of stable regions for α < G/GN as well as α = G/GN case is completely different from that of α > G/GN. |
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