Electrically charged black holes in linear and nonlinear electrodynamics: Geodesic analysis and scalar absorption

@article{Paula2020ElectricallyCB,
  title={Electrically charged black holes in linear and nonlinear electrodynamics: Geodesic analysis and scalar absorption},
  author={Marco A. A. Paula and Luiz C. S. Leite and Lu{\'i}s C. B. Crispino},
  journal={Physical Review D},
  year={2020},
  volume={102}
}
Along the last decades, several regular black hole (BH) solutions, i.e., singularity-free BHs, have been proposed and associated to nonlinear electrodynamics models minimally coupled to general relativity. Within this context, it is of interest to study how those nonlinear-electrodynamic-based regular BHs (RBHs) would interact with their astrophysical environment. We investigate the propagation of a massless test scalar field in the background of an electrically charged RBH solution, obtained… 
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References

SHOWING 1-10 OF 65 REFERENCES
Universality of high-energy absorption cross sections for black holes
We consider the absorption problem for a massless scalar field propagating in static and spherically symmetric black holes of arbitrary dimension endowed with a photon sphere. For this wide class of
Scattering of massless scalar waves by Reissner-Nordström black holes
We present a study of scattering of massless planar scalar waves by a charged nonrotating black hole. Partial wave methods are applied to compute scattering and absorption cross sections, for a range
Bardeen regular black hole with an electric source
If some energy conditions on the stress-energy tensor are violated, is possible construct regular black holes in General Relativity and in alternative theories of gravity. This type of solution has
Black hole as a magnetic monopole within exponential nonlinear electrodynamics
Abstract We perform the gauge covariant quantization of the exponential model of nonlinear electrodynamics. Magnetically charged black holes, in the framework of our model are considered, and the
Regular black holes with a nonlinear electrodynamics source
We construct several charged regular black hole metrics employing mass distribution functions which are inspired by continuous probability distributions. Some of these metrics satisfy the weak energy
Regular electrically charged vacuum structures with de Sitter centre in nonlinear electrodynamics coupled to general relativity
We address the question of existence of regular spherically symmetric electrically charged solutions in nonlinear electrodynamics (NED) coupled to general relativity. The stress-energy tensor of the
Absorption of planar massless scalar waves by Bardeen regular black holes
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 holes.
Magnetically charged regular black hole in a model of nonlinear electrodynamics
We obtain a magnetically charged regular black hole in general relativity. The source to the Einstein field equations is nonlinear electrodynamic field in a physically reasonable model of nonlinear
Scattering by regular black holes: Planar massless scalar waves impinging upon a Bardeen black hole
Singularities are common features of general relativity black holes. However, within general relativity, one can construct black holes that present no singularities. These regular black hole
Regular magnetic black holes and monopoles from nonlinear electrodynamics
It is shown that general relativity coupled to nonlinear electrodynamics (NED) with the Lagrangian $L(F)$, $F = F_mn F^mn$ having a correct weak field limit, leads to nontrivial static, spherically
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