Light propagation and gravitational lensing effects in charged Kalb-Ramond spacetime in nonlinear electrodynamics

TL;DR

This paper analyzes how light deflection and gravitational lensing are affected by charged Kalb-Ramond black holes in nonlinear electrodynamics, considering Lorentz symmetry violation and nonlinearity parameters in both strong and weak gravitational fields.

Contribution

It provides an analytical framework for understanding light propagation and lensing effects in charged Kalb-Ramond spacetime with nonlinear electrodynamics, including parameter variations and different field cases.

Findings

Derived expansion coefficients for light deflection in strong and weak fields.

Analyzed the impact of Lorentz violation and nonlinearity on lensing observables.

Compared effects in canonical and phantom field scenarios.

Abstract

In this work, we theoretically investigate the deflection of light for strong- and weak-field regimes in the background of an electrically charged BH described in Kalb-Ramond gravity, which introduces the Lorentz symmetry violation parameter $l$, as well as the control of the degree of nonlinearity incorporated by electrodynamics through the parameter $\gamma$. We analytically constructed the expansion coefficients in both limits and used them as a basis to investigate gravitational lensing effects through observables, taking into account the variation of the parameters involved in the model, both for the canonical field and the phantom case.