Effect of plasma on gravitational lensing by a Schwarzschild black hole immersed in perfect fluid dark matter
Farruh AtamurotovAkfa University, Kichik Halqa Yuli Street 17, Tashkent 100095, UzbekistanAhmadjon AbdujabbarovDepartment of Astronomy and Astrophysics, National University of Uzbekistan, Tashkent 100174, UzbekistanWen-Biao HanSchool of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
ABI
Abstract
We have explored the effect of both uniform and nonuniform distributed plasma medium on gravitational lensing around static black hole in the presence of perfect fluid dark matter (PFDM). We have shown that the PFDM and plasma parameters has opposite effect on the change of the value of the deflection angle of the light rays. It has been also shown that PFDM decreases the total magnification of image sources while the plasma causes opposite effect. Finally, we have analyzed the shadow cast by the black hole surrounded by PFDM and plasma. The increase of the PFDM parameter causes the decrease the size of the shadow of black hole.
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