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.