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

2020/11/12 by Marco A. A. de Paula, Marco A. A. Paula, Luiz C. S. Leite +1 · 53 citations
Mathematics · Physics and Astronomy · #Absorption (acoustics) #Black Holes and Theoretical Physics #Classical field theory #Classical mechanics #Cosmology and Gravitation Theories #Geodesic #Geometry #Gravitation #Mathematical analysis #Mathematical physics #Mathematics #Nonlinear system #Optics #Physics #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #Scalar (mathematics) #Scalar theories of gravitation #gr-qc

paper · pdf · doi:10.1103/physrevd.102.104033

published in Physical review. D/Physical review. D. 102(10) (American Physical Society) · 10 pages, 15 figures, published in Physical Review D

openalex publication_date 2020/11/12 · arxiv created 2020/11/17 · arxiv updated 2020/11/18 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/06

Abstract

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 by Eloy Ay'on-Beato and Alberto Garc'\ia. Using a numerical approach, we compute the absorption cross section of the massless scalar field for arbitrary values of the frequency of the incident wave. We compare the absorption cross sections of the Ay'on-Beato and Garc'\ia RBH with the Reissner-Nordstr"om BH, showing that they can be very similar in the whole frequency regime.

Citations

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Cited by

• Absorption spectrum and greybody factors of charged black holes in loop quantum gravity