Light deflection by a rotating global monopole spacetime

Kimet Jusufi, Marcus C. Werner, Ayan Banerjee, Ali Övgün

Research output: Contribution to journalArticlepeer-review

106 Scopus citations


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 in each spacetime 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 nonrotating global monopole and Letelier spacetimes as well as the Kerr solution.

Original languageEnglish
Article number104012
JournalPhysical Review D
Issue number10
StatePublished - 2017


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