Photon motion and weak gravitational lensing in black-bounce spacetime*
Furkat Sarikulov, Astronomicheskaya 33, Tashkent, 100052, UZBEKISTANFarruh AtamurotovInha University in Tashkent, Inha University in Tashkent, Tashkent, Tashkent, 100170, UZBEKISTANAhmadjon AbdujabbarovVokhid Khamidov, ashkent University of Information Technologies named after Muhammad al Khwarizmi, Tashkent, 100014, UZBEKISTAN
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Abstract The effect of spacetime curvature on photon motion may offer an opportunity to propose new tests on gravity theories. In this study, we investigate and focus on the massless (photon) particle motion around black-bounce gravity. We analyze the horizon structure around a gravitational compact object described by black-bounce spacetime. The photon motion and the effect of gravitational weak lensing in vacuum and plasma are discussed, and the shadow radius of the compact object is also studied in black-bounce spacetime. Additionally, the magnification of the image is studied using the deflection angle of light rays.
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