The Event Horizon Telescope (EHT) Collaboration observed ring images called the
shadows of M87* and Sagittarius A*(Sgr A*), which are supermassive objects in M87 and …

This paper investigates gravitational lensing effects in the presence of plasma in the strong
deflection limit, which corresponds to light rays circling around a compact object and forming …

A gravitational field can cause a rotation of the polarization plane of light. This phenomenon
is known as the gravitational Faraday effect. It arises due to different spin-orbit interactions of …

In this letter, we present a novel approach to investigate the behavior of the photon sphere
and shadow radius. Our method leverages extended gravitational decoupling and unveils …

We present the horizon structures and the shadows for Kerr-Newman-AdS black hole
located in perfect fluid matter field in Rastall gravity. By considering the Hamilton-Jacobi …

Recent observations of black hole shadows have revolutionized our ability to probe gravity
in extreme environments. This manuscript presents a novel analytic method to calculate, in …

We study the dynamics of both timelike and lightlike particles in the vicinity of a stationary,
spherically symmetric black hole governed by nonlinear electrodynamics (NED). The …

In this paper, we introduce a new approach to study the behavior of the photon sphere and
shadow radius. Our method uses extended gravitational decoupling and reveals two …

Black hole shadows and photon spheres offer valuable tools for investigating black hole
properties. Recent observations by the Event Horizon Telescope Collaboration have …

Near a gravitating compact object, massive particles traveling along timelike geodesics are
gravitationally deflected similarly to light. In this paper, we study the deflection angles of …