Strong Gravitational Lensing with Gauss-Bonnet correction

Abstract

In this paper we investigate the strong gravitational lensing with Gauss-Bonnet gravity. By considering the logarithmic term for deflection angle, we obtain the deflection angle $\hat{\alpha }$ and corresponding parameters $\bar{a}$ and $\bar{b}$. Finally, by using the relations between the observables and lensing parameters, we estimate the observables such as, ${\theta }_{\infty }$, $s$ and $r_m$, for the relativistic images in the Gauss-Bonnet background.

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• Shape of higher-order images of equatorial emission rings around a Schwarzschild black hole: Analytical description with polar curves
• Photon spheres in Einstein and Einstein-Gauss-Bonnet theories and circular null geodesics in axially-symmetric spacetimes
• The time delay in strong gravitational lensing with Gauss-Bonnet correction
• A new asymptotical flat and spherically symmetric solution in the generalized Einstein-Cartan-Kibble-Sciama gravity and gravitational lensing
• Angular Location of the $n^{th}$ Einstein Ring at large $n$