In the Einstein-Maxwell theory with nonlinear electrodynamics (NED) fields, the singularity
problem in general relativity is potentially resolved, leading to regular black hole solutions …

We study gravitational lensing in the strong-field limit using the rotating quantum-corrected
black hole (RQCBH) with an additional parameter α besides mass M and spin parameter a …

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 …

Current images of the supermassive black hole (SMBH) candidates at the centre of our
Galaxy and M87 have opened an unprecedented era for studying strong gravity and the …

Hotspots, often characterized as point-like emissions, frequently manifest near black holes,
displaying significantly increased luminosity compared to the surrounding accretion flow. It is …

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 …

En esta tesis realizamos investigaciones sobre el comportamiento de la materia bajo el
régimen extremo del campo gravitacional de objetos compactos tales como estrellas de …