Motivated by recent work on the Modified Maxwell (ModMax) black holes [Phys Lett B
10.1016/j. physletb. 2020.136011], which are invariant in duality rotations and conformal …

Gravitational waves (GWs) are an exciting new probe of physics beyond the standard
models of gravity and particle physics. One interesting possibility is provided by the so …

We investigate the absorption of a massive and charged scalar field in a Reissner-
Nordström background. We compare our numerical results for the absorption cross section …

Superradiant clouds may develop around a rotating black hole, if there is a bosonic field with
Compton wavelength comparable to the size of the black hole. In this paper, we investigate …

Using numerical methods, we investigate the absorption properties of a family of
nonsingular solutions which arise in different metric-affine theories, such as quadratic and …

Black holes typically inhabit highly dynamical galactic environments and are frequently
permeated by accretion media. The inevitable scattering of scalar, electromagnetic, and …

Superradiant instabilities may create clouds of ultralight bosons around rotating black holes,
forming so-called “gravitational atoms “. It was recently shown that the presence of a binary …

In this paper we focus on the partial wave method with the aim of exploring the scattering of
massless scalar waves due to the noncommutative Schwarzschild black hole via Lorentzian …

Accretion of fields by black holes is a subject of great interest in physics. It is known that
accretion plays a fundamental role in active galactic nuclei and in the evolution of black …

We study the absorption of massless scalar waves in a geometry that interpolates between
the Schwarzschild solution and a wormhole that belongs to the Morris-Thorne class of …