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    Gravitational lensing around Kehagias-Sfetsos compact objects surrounded by plasma

    Zdeněk Stuchlík · Duben 01, 2019 · Fyzika · 0 comments
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    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;

    https://ui.adsabs.harvard.edu/abs/2019arXiv190408776H

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