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arXiv 0708.2841math-phmath.MP
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静电荷黑洞的测地线和测地线偏差

Geodesics and Geodesic Deviation in static Charged Black Holes

Ragab M. Gad

摘要:

研究了静态荷电黑洞时空,特别是Reissner-Nordström和弦荷电黑洞沿零测地线的径向运动.我们分析了有效势的性质。研究了这些时空中的圆形光子轨道。我们发现两个带电黑洞中圆形光子轨道的半径是不同的,与史瓦西时空中给出的半径不同。研究了带电弦黑洞中两个试验粒子间的引力场的物理效应,并与Schwarzschild和Reissner-Nordström黑洞中的结果进行了比较.

英文摘要:

The radial motion along null geodesics in static charged black hole space-times, in particular, the Reissner-Nordström 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-Nordström black holes.

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