Light deflection and gravitational lensing effects in acoustic black-bounce spacetime
Abstract
In the present work, we analyze the gravitational deflection for a light beam in the weak and strong field regimes for the gravitational analogue geometry of an acoustic black hole (ABH) and acoustic black-bounce (ABB). Motivationally, the first spacetime arises as an exact solution of the field equations for gravitational black holes (BHs) in an Einstein-scalar-Gauss-Bonnet theory (EsGB) \cite{3}. In contrast, the second model arises from the combination of phantom scalar field and nonlinear electrodynamics in general relativity (GR) \cite{INTRO24}. We construct analytical expressions for the angular deflection of light in both limits and, from them, analyze the construction of the observables, which allow us to relate theoretical models to observational data. We compare these observables and show how much they differ from those obtained in the Schwarzschild solution.
Keywords
Cite
@article{arxiv.2505.12577,
title = {Light deflection and gravitational lensing effects in acoustic black-bounce spacetime},
author = {C. F. S. Pereira and A. R. Soares and M. V. de S. Silva and R. L. L. Vitória and H. Belich},
journal= {arXiv preprint arXiv:2505.12577},
year = {2025}
}
Comments
11 pages, 6 figures