Weak gravitational lensing: a compact object with arbitrary quadrupole moment immersed in plasma

Abstract

We study weak gravitational lensing around a compact object with arbitrary quadrupole moment in the presence of plasma. The studied compact objects are considered to be spherically symmetric. The additional parameter $\epsilon$ regulating the quadrupole moment in the metric alters the deflection angle of light rays along with the plasma parameters. In the vacuum, the number of images due to the presence of the parameter $\epsilon$ increases and causes the increase of the magnification of the image source. The effects of uniform and nonuniform plasma on gravitational lensing around the compact object are also studied.

9 pages, 4 figures. v2: refereed version

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• Charged black hole in $4D$ Einstein-Gauss-Bonnet gravity: Particle motion, plasma effect on weak gravitational lensing and centre-of-mass energy
• Analytical approach to strong gravitational lensing from ultracompact objects
• Weak deflection angle of Kazakov-Solodukhin black hole in plasma medium using Gauss-Bonnet theorem and its greybody bonding
• Effect of Non-linear Electrodynamics on Weak field deflection angle by Black Hole
• Charged particle motion around a quasi-Kerr compact object immersed in an external magnetic field
• Dynamics of charged particles and magnetic dipoles around magnetized quasi-Schwarzschild black holes
• Gravitational lensing around Kehagias-Sfetsos compact objects surrounded by plasma
• Effect of black hole--plasma system on light beams