Gravitational lensing around Kehagias–Sfetsos compact objects surrounded by plasma
Sudipta HenshInstitute of Physics and Research Centre of Theoretical Physics and Astrophysics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo náměstí 13, 74601, Opava, Czech RepublicAhmadjon AbdujabbarovUlugh Beg Astronomical Institute, Astronomicheskaya 33, Tashkent 100052, UzbekistanJan ScheeInstitute of Physics and Research Centre of Theoretical Physics and Astrophysics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo náměstí 13, 74601, Opava, Czech RepublicZdeněk StuchlíkInstitute of Physics and Research Centre of Theoretical Physics and Astrophysics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo náměstí 13, 74601, Opava, Czech Republic
Ochiq kirishOlmos
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ABI
Annotatsiya
We study the optical properties of the Kehagias-Sfetsos (KS) compact objects, characterized by the "Hoava" parameter K S , in the presence of plasma, considering its homogeneous or power-law density distribution. The strong effects of both "Hoava" parameter K S 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 "Hoava" 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.
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