Study of bending angle and shadow in a new Schwarzschild-like black hole affected by plasma and non-plasma mediums* *Supported by the National Natural Science Foundation of China (11975145)

Abstract

In this study, we analyze the models of the deflection angle of a new Schwarzschild-like black hole (BH) and employ the optical metric of the BH. To achieve this, we use the Gaussian curvature of the optical metric and the Gauss-Bonnet theorem, known as the Gibbons-Werner technique, to determine the deflection angle. Furthermore, we examine the deflection angle in the presence of a plasma medium and the effect of the plasma medium on the deflection angle. The deflection angle of the BH solution in the gauged super-gravity is computed using the Keeton-Petters approach. Utilizing the ray-tracing technique, we investigate the shadow of the corresponding BH and analyze the plots of the deflection angle and shadow to verify the influence of the plasma and algebraic thermodynamic parameters on the deflection angle and shadow.