Absorption and unbounded superradiance in a static regular black hole spacetime

MAA de Paula, LCS Leite, SR Dolan, LCB Crispino - Physical Review D, 2024 - APS
Regular black holes (RBHs)—geometries free from curvature singularities—arise naturally
in theories of nonlinear electrodynamics. Here we study the absorption and superradiant …

Comment on:“Absorption and scattering of massless scalar wave from Regular Black Holes”

MAA de Paula, LC dos Santos Leite… - General Relativity and …, 2023 - Springer
Absorption and scattering properties of matter fields in the background of black hole (BH)
spacetimes have been investigated in several standard scenarios since the 1960s (see, eg …

[HTML][HTML] Is it possible to distinguish between different black hole solutions using the Shapiro time delay?

ELB Junior, ME Rodrigues, HA Vieira - The European Physical Journal C, 2023 - Springer
In this paper we propose to use the Shapiro time delay as a tool to distinguish between
different black hole solutions. We calculate the analytic Shapiro time using first order …

Geodesic analysis, absorption and scattering in the static Hayward spacetime

MAA de Paula, L Leite, LCB Crispino - arXiv preprint arXiv:2311.15771, 2023 - arxiv.org
We investigate the propagation of massless particles and scalar fields in the background of
Hayward regular black holes. We compute the absorption and scattering cross sections and …

Nearly Static Magnetized Kerr Black-hole in Non-linear Electrodynamics

KG Managave, HA Redekar, RB Kumbhar… - arXiv preprint arXiv …, 2023 - arxiv.org
We have analyzed the thermodynamics of slowly rotating magnetized Kerr black-hole, with
typical spin parameter $ a\le 0.1$(nearly static) in the background of non-linear …