Light deflection and gravitational lensing effects inspired by loop quantum gravity

Abstract

In the present work, we theoretically investigate light deflection in the weak and strong field regimes for two regular spacetimes with corrections from loop quantum gravity. We treat analytically the expansions for both limits and use them as a basis for investigating gravitational lensing observables. We analyze and provide reasonable values for observables related to the second model that observational tools may be able to detect.

21 pages, 6 figures. Comments are welcome. V2: Added and improved some explanations. References added. Final version. Published in JCAP

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• Charged black holes in Kalb-Ramond gravity: Weak Deflection Angle, Shadow cast, Quasinormal Modes and Neutrino annihilation
• Multimodal signatures of asymptotic (A)dS Kalb-Ramond black holes: Constraints through the shadow, weak deflection angle, and topological photon spheres
• Boundary-only weak deflection angles from isothermal optical geometry
• Strong gravitational lensing effects of black holes with quantum hair
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• Sources of matter for wormholes in a k-essence theory
• Rotating black hole shadows in metric-affine bumblebee gravity