Year: 2016
Type: article
Abstract: Using a new geometrical method introduced by Werner, we find the deflection angle in the weak limit approximation by a spinning cosmic string in the context of the Einstein–Cartan (EC) theory of gravity. We begin by adopting the String-Randers optical metric, then we apply the Gauss–Bonnet theorem to the optical geometry and derive the leading terms of the deflection angle in the equatorial plane. Calculation shows that light deflection is affected by the intrinsic spin of the cosmic string and torsion.
Source: The European Physical Journal C
Author: Kimet Jusufi
Institution: State University of Tetova
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2370670507