Light Deflection by a Rotating Global Monopole Spacetime

Abstract

We investigate the deflection of light by a rotating global monopole spacetime and a rotating Letelier spacetime in the weak deflection approximation. To this end, we apply the Gauss-Bonnet theorem to the corresponding osculating optical geometries and show that the deflection of light increases due to the presence of the global monopole parameter and the string cloud parameter, respectively. The results obtained for the deflection angle in the equatorial plane generalize known results for the corresponding non-rotating global monopole and Letelier spacetimes as well as the Kerr solution.

10 pages, accepted by Phys. Rev. D

References in corpus (4)

• Applications of the Gauss-Bonnet theorem to gravitational lensing
• Finite-distance corrections to the gravitational bending angle of light in the strong deflection limit
• Stationary Metrics and Optical Zermelo-Randers-Finsler Geometry
• Gravitational microlensing in Verlinde's emergent gravity

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