Turkish Journal of Physics
DOI
10.3906/fiz-2110-16
Abstract
In this review, various researches on finding the bending angle of light deflected by a massive gravitating object which regard the Gauss-Bonnet theorem as the premise have been revised. Primarily, the Gibbons and Werner method is studied apropos of the gravitational lensing phenomenon in the weak field limits. Some exclusive instances are deliberated while calculating the deflection angle, beginning with the finite-distance corrections on nonasymptotically flat spacetimes. Effects of plasma medium is then inspected to observe its contribution to the deflection angle. Finally, the Jacobi metric is explored as an alternative method, only to arrive at similar results. All of the cases are probed in three constructs, one as a generic statement of explanation, one for black holes, and one for wormholes, so as to gain a perspective on every kind of influenc
Keywords
Weak deflection angle, Gauss-Bonnet theorem, black holes, wormhol
First Page
247
Last Page
267
Recommended Citation
KUMARAN, YASHMITHA and ÖVGÜN, ALİ
(2021)
"Deriving weak deflection angle by black holes or wormholes usingGauss-Bonnet theorem,"
Turkish Journal of Physics: Vol. 45:
No.
5, Article 2.
https://doi.org/10.3906/fiz-2110-16
Available at:
https://journals.tubitak.gov.tr/physics/vol45/iss5/2
