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5 papers

gr-qc2026

Geometric effects of torsion on black hole ringdown and shadows in Poincaré gauge gravity

Terkaa Victor Targema, Kazuharu Bamba, Riasat Ali +1

The paper studies how spacetime torsion in Poincaré gauge gravity modifies black hole ringdown signals and shadow images, focusing on Reissner‑Nordström‑like solutions where torsio…

gr-qc2025

First-order correction of tunneling and entropy in the Horndeski gravity-like hairy black hole

Riasat Ali, Xia Tiecheng, Rimsha Babar

In this work, we apply tunneling formalism to analyze charged particles tunneling across a hairy black hole horizon. Such black hole solutions are essential for frameworks based on…

gr-qc2025

Exploring light deflection and black hole shadows in Rastall theory with plasma effects

Riasat Ali, Xia Tiecheng, Rimsha Babar +1

In this article, we examine the gravitational deflection of particles in curved spacetime immersed in perfect fluid in the context of Rastall theory. We propose an infinite region…

gr-qc2025

Evaluation of physical properties of Kiselev like AdS spacetime in the context of gravity under the impact of quantum gravity

Riasat Ali, Xia Tiecheng, Rimsha Babar

The developments of the gravity theory, which is a logical expansion of general relativity according to Einstein, inspire us to examine this theory in greater detail and…

gr-qc2025

Study of light deflection and shadow from a hairy black hole under the influence of the non-magnetic plasma

Riasat Ali, Xia Tiecheng, Muhammad Awais +1

This article computes the bending angle of a hairy black hole at weak field limits. The Gauss-Bonnet theorem is applied to the Gaussian optical curvature; this gives a way to calcu…