Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant
instability, which can lead to a time evolution of the supermassive BH shadow. We study …

Black hole (BH) shadows can be used to probe new physics in the form of ultralight particles
via the phenomenon of superradiant instability. By directly affecting the BH mass and spin …

While astrophysical and cosmological probes provide a remarkably precise and consistent
picture of the quantity and general properties of dark matter, its fundamental nature remains …

Black holes can accumulate a large amount of energy, responsible for highly energetic
astrophysical phenomena. Although the Blandford–Znajek is considered to date the leading …

In this paper, we consider a well-established magnetic Penrose process (MPP) and bring
out its impact on the efficiency of energy extraction from higher dimensional (ie, D> 4) black …

A superradiant cloud of ultralight bosons near a rotating black hole provides a smoking gun
for particle physics in the infrared. However, tidal perturbations from a nearby binary …

Abstract The No Hair theorem in classical general relativity predicts that rotating black holes
are specified by the Kerr metric, which is uniquely identified by the mass and spin. However …

Comparing different dark matter (DM) models, we explore the DM influence on black hole
(BH) accretion disk physics, considering corotating and counterrotating thick accretion tori …

Adopting the manifestation of low frequency and low mass for the scalar perturbation, we
perform a semiclassical analysis of the superradiance phenomenon for a rotating hairy …