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Geodesics and Geodesic Deviation in static Charged Black Holes

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arxiv 0708.2841 v3 pith:JZQV3GRU submitted 2007-08-21 math-ph math.MP

classification math-phmath.MP
keywords blackchargedholescirculargeodesicsgivenholeorbits
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The radial motion along null geodesics in static charged black hole space-times, in particular, the Reissner-Nordstr\"om and stringy charged black holes are studied. We analyzed the properties of the effective potential. The circular photon orbits in these space-times are investigated. We found that the radius of circular photon orbits in both charged black holes are different and differ from that given in Schwarzschild space-time. We studied the physical effects of the gravitational field between two test particles in stringy charged black hole and compared the results with that given in Schwarzschild and Reissner-Nordstr\"om black holes.

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  1. Geodesic deviation in the $q$-metric

    gr-qc 2025-01 conditional novelty 5.0 of 10

    In the q-metric, tidal stretching and compression of radially falling test particles depend on the deformation parameter q and the polar angle θ, and differ from Schwarzschild near the singularity at r=2m.

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