Publication date: Apr 2019
Abstract:
We study the optical properties of the Kehagias-Sfetsos (KS) compact
objects, characterized by the „Hov{r}ava“ parameter $omega_{_{KS}}$,
in the presence of plasma, considering its homogeneous or power-law
density distribution. The strong effects of both „Hov{r}ava“ parameter
$omega_{_{KS}}$ and plasma on the shadow cast by the KS compact objects
are demonstrated. Using the weak field approximation, we investigate the
gravitational lensing effect. Strong dependence of the deflection angle
of the light on both the „Hov{r}ava“ and plasma parameter is explicitly
shown. The magnification of image source due to the weak gravitational
lensing is given for both the homogeneous and inhomogeneous plasma.
Authors:
Hensh, Sudipta; Abdujabbarov, Ahmadjon; Schee, Jan; Stuchlík, Zdeněk;