Optical features of AdS black holes in the novel 4D Einstein-Gauss-Bonnet gravity coupled to nonlinear electrodynamics

Abstract

An alternative theory of gravity that has attracted much attention recently is the novel four-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity. The theory is rescaled by the Gauss-Bonnet (GB) coupling constant $\alpha \to \alpha /(D-4)$ in $D$ dimensions and redefined as four-dimensional gravity in the limit $D\to 4$. Thus, in this manner, the GB term yields a non-trivial contribution to the gravitational dynamics. In fact, regularized black hole solutions and applications in the novel 4D EGB gravity have also been extensively explored. In this work, motivated by recent astrophysical observations, we present an in-depth study of the optical features of AdS black holes in the novel 4D EGB gravity coupled to exponential nonlinear electrodynamics (NED), such as the shadow geometrical shape, the energy emission rate, the deflection angle and quasinormal modes. Taking into account these dynamic quantities, we investigate the effects on the black hole solution by varying the parameters of the models. More specifically, we show that the variation of the GB and NED parameters, and of the cosmological constant, imprints specific signatures on the optical features of AdS black holes in the novel 4D EGB gravity coupled to nonlinear electrodynamics, thus leading to the possibility of directly testing these black hole models by using astrophysical observations.

11 pages, 5 figures. V2: references added. V3: 20 pages, 5 figures; significant discussion and references added; matches published version, using MDPI style

References in corpus (26)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
• Shadow of a black hole surrounded by dark matter
• Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope
• On Taking the $D\to 4$ limit of Gauss-Bonnet Gravity: Theory and Solutions
• Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87*
• Connection between black-hole quasinormal modes and lensing in the strong deflection limit
• Black hole shadow in a general rotating spacetime obtained through Newman-Janis algorithm
• Thermodynamics and P-v criticality of Bardeen-AdS Black Hole in 4-D Einstein-Gauss-Bonnet Gravity
• Off-equatorial orbits in strong gravitational fields near compact objects -- II: halo motion around magnetic compact stars and magnetized black holes
• Comment on "Einstein-Gauss-Bonnet Gravity in 4-Dimensional Space-Time''
• Quasinormal modes and second order thermodynamic phase transition for Reissner-Nordström black hole
• Shadow, deflection angle and quasinormal modes of Born-Infeld charged black holes
• Comment on "Einstein-Gauss-Bonnet Gravity in Four-Dimensional Spacetime"
• Black hole as a magnetic monopole within exponential nonlinear electrodynamics
• Thermal Image and Phase Transitions of Charged AdS Black Holes using Shadow Analysis
• Effect of the quintessential dark energy on weak deflection angle by Kerr-Newmann Black hole
• Cosmic acceleration with a negative cosmological constant in higher dimensions
• Quasinormal modes in the background of charged Kaluza-Klein black hole with squashed horizons
• Accurate mapping of spherically symmetric black holes in a parameterised framework
• Inflationary gravitational waves in consistent $D\to 4$ Einstein-Gauss-Bonnet gravity
• Beyond lensing by the cosmological constant
• Quasinormal modes of black holes with a scalar hair in Einstein-Maxwell-dilaton theory
• Observational optical constraints of regular black holes
• Quasinormal modes of charged black holes in higher-dimensional Einstein-power-Maxwell theory
• Observational appearance of Kaluza-Klein black holes

Cited by in corpus (7)

• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• The 4D Einstein-Gauss-Bonnet Theory of Gravity: A Review
• Shadow, deflection angle and quasinormal modes of Born-Infeld charged black holes
• Quasinormal modes-shadow correspondence for rotating regular black holes
• Black bounces in Cotton gravity
• Radiation from Einstein-Gauss-Bonnet de Sitter Black Hole via Tunneling Process
• Dyonic regular black bounce solutions in General Relativity