Weak gravitational lensing of black hole from T-duality in plasma

Orzuev, Shakhzod; Atamurotov, Farruh; Abdujabbarov, Ahmadjon; Abduvokhidov, Alisher

doi:10.1016/j.newast.2023.102104

Weak gravitational lensing of black hole from T-duality in plasma

Jul 26, 2023

Published in:

New Astron. 105 (2024) 102104

Published: Jul 26, 2023

DOI:

10.1016/j.newast.2023.102104 (publication)

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Abstract: (Elsevier B.V.)

In this study, we investigate the impact of a plasma environment on gravitational weak lensing around a black hole from the perspective of T-duality. Our results demonstrate that the deflection angle of light rays around the black hole is notably affected by the parameter

l_{0}

, with an increase leading to a decrease in the deflection angle, while the effect of plasma on the deflection angle is the opposite. We also consider different types of plasma distributions, including uniform

ω_{e} = c o n s t

, Singular Isothermal Sphere medium, and Non-Singular Isothermal gas sphere plasma. We have analyzed the total magnification of the image source due to gravitational weak lensing, taking into account the effect of parameter

l_{0}

related to T-duality in the presence of plasma around the black hole.

Weak gravitational lensing
Deflection angle
T-duality
Plasma medium

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