The Effect of Quark-antiquark Confinement on the Deflection Angle by the NED Black Hole

Abstract

In this study, we explore the influence of quark-antiquark confinement on the deflection angle within the framework of nonlinear electrodynamic (NED) black holes. To achieve this, we establish the appropriate optical spacetime metric and subsequently determine the Gaussian optical curvature. Utilizing the Gauss-Bonnet theorem, we investigate the impact of quark-antiquark confinement on the deflection angle exhibited by NED black holes. Additionally, we delve into the effects of a cold non-magnetized plasma medium and also axion-plasmon on gravitational lensing. Our findings highlight the significance of the axion-plasmon effect on the optical properties of NED black holes, particularly its influence on gravitational lensing. This exploration is particularly relevant in the context of the axion's potential role as a dark matter candidate. The multifaceted interplay between quark-antiquark confinement, nonlinear electrodynamics, and plasma dynamics provides a nuanced understanding of gravitational lensing phenomena. These insights contribute to ongoing research in dark matter studies and offer avenues for further theoretical and observational investigations in astrophysics.

13 pages. Two-column. Accepted for publication in Physics of the Dark Universe

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• Analyzing Deflection Angles and Photon Sphere Dynamics of Magnetically Charged Black Holes in Nonlinear Electrodynamic
• Modeling and Analyzing Stability of Hybrid Stars within $f(Q)$ Gravity
• The influence of cosmological constant on light deflection in rotating spacetimes via the generalized Gibbons-Werner method