Shadows, rings and optical appearance of a magnetically charged regular black hole illuminated by various accretion disks

Abstract

The Event Horizon Telescope (EHT) imaging of the supermassive black holes at the centers of Messier 87 galaxy and the Milky Way galaxy marks a significant step in observing the photon rings and central brightness depression that define the optical appearance of black holes with an accretion disk scenario. Inspired by this, we take into account a static and spherically symmetric magnetically charged regular black hole (MCRBH) metric characterized by its mass and an additional parameter q, which arises from the coupling of Einstein gravity and nonlinear electrodynamics (NLED) in the weak field approximation. This parameterized model offers a robust foundation for testing the coupling of Einstein gravity and NLED in the weak-field approximation, using the EHT observational results. In this study, we investigate the geodesic motion of particles around the solution, followed by a discussion of its fundamental geometrical characteristics such as scalar invariants. Using null geodesics, we examine how the model parameter influences the behavior of the photon sphere radius and the associated shadow silhouette. We seek constraints on q by applying the EHT results for supermassive black holes M87* and Sgr A*. Furthermore, it is observed that the geodesics of time-like particles are susceptible to variations in q, which can have an impact on the traits of the innermost stable circular orbit and the marginally bounded orbit. Our primary objective is to probe how the free parameter q affects various aspects of the accretion disk surrounding the MCRBH using the thin-disk approximation. Next, we discuss the physical characteristics of the thin accretion disk as well as the observed shadows and rings of the MCRBH, along with its luminosity, across various accretion models. Ultimately, variations in accretion models and the parameter q yield distinct shadow images and optical appearances of the MCRBH.

31 pages, 2 tables, 16 figures

References in corpus (49)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• X-ray Properties of Black-Hole Binaries
• First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
• First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
• First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
• GW190521: A Binary Black Hole Merger with a Total Mass of $150M_{\odot }$
• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric
• Black Hole Shadows, Photon Rings, and Lensing Rings
• Shadow of a black hole surrounded by dark matter
• Constraints on black-hole charges with the 2017 EHT observations of M87*
• The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits
• Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors
• The Shadow of a Spherically Accreting Black Hole
• Shadows of Einstein-dilaton-Gauss-Bonnet black holes
• A wide star-black-hole binary system from radial-velocity measurements
• A code to compute the emission of thin accretion disks in non-Kerr space-times and test the nature of black hole candidates
• Probing a nonlinear electrodynamics black hole with thin accretion disk, shadow and deflection angle with M87* and Sgr A* from EHT
• Black hole mimicker hiding in the shadow: Optical properties of the $\gamma$-metric
• Distortions of images of Schwarzschild lensing
• Solutions of the Einstein equations for a black hole surrounded by a galactic halo
• Testing Hořava-Lifshitz gravity using thin accretion disk properties
• No-Hair Theorem in the Wake of Event Horizon Telescope
• Quasiperiodic Oscillations, Quasinormal Modes and Shadows of Bardeen-Kiselev Black Holes
• Dehnen halo effect on a black hole in an ultra-faint dwarf galaxy
• Investigating the Connection between Generalized Uncertainty Principle and Asymptotically Safe Gravity in Black Hole Signatures through Shadow and Quasinormal Modes
• Probing the Lorentz Symmetry Violation Using the First Image of Sagittarius A*: Constraints on Standard-Model Extension Coefficients
• Influence of Accretion Flow and Magnetic Charge on the Observed Shadows and Rings of the Hayward Black Hole
• Accretion disks around black holes in modified strong gravity
• The Photon Ring in M87*
• Rings and images of Horndeski hairy black hole illuminated by various thin accretions
• Probing Schwarzschild-like Black Holes in Metric-Affine Bumblebee Gravity with Accretion Disk, Deflection Angle, Greybody Bounds, and Neutrino Propagation
• Dark matter spike around Bumblebee black holes
• Thin Accretion Disk onto slowly rotating black holes in Einstein-Æther theory
• Observational predictions of LQG motivated polymerized black holes and constraints from Sgr A* and M87*
• Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair
• Conservation of distortion of gravitationally lensed images
• Optical appearance of black holes surrounded by a dark matter halo
• New attractor mechanism for spherically symmetric extremal black holes
• Gravitational traces of bumblebee gravity in metric-affine formalism
• Nonlinearly charged black holes: Shadow and Thin-accretion disk
• Entropy of an extremal regular black hole
• Observational Appearances of Magnetically Charged Black Holes in Born-Infeld Electrodynamics
• Capture of non-relativistic particles in eccentric orbits by a Kerr black hole
• Thin accretion disks around a black hole in Einstein-Aether-scalar theory
• Accelerating AdS black holes in gravity's rainbow
• Geodesic of nonlinear electrodynamics and stable photon orbits
• Observational signatures of a static $f(R)$ black hole with thin accretion disk
• Novel regular black holes: geometry, source and shadow

Cited by in corpus (11)

• Thin accretion disk and shadow of Kerr-Sen black hole in Einstein-Maxwell-dilaton-axion gravity
• Analyzing Deflection Angles and Photon Sphere Dynamics of Magnetically Charged Black Holes in Nonlinear Electrodynamic
• Shadows aspect of rotating black holes in the Einstein-AdS SU(N)-nonlinear sigma model
• Optical Appearance and Shadow of Kalb-Ramond Black Hole: Effects of Plasma and Accretion Models
• Charged black hole surrounded by a galactic halo in de Sitter universe
• Testing black holes with cosmological constant in Einstein-bumblebee gravity through the black hole shadow using EHT data and deflection angle
• Observational properties of black hole in quantum fluctuation modified gravity
• Shadows and Observational Images of a Schwarzschild-like Black Hole Surrounded by a Dehnen-type Dark Matter Halo
• Accretion of matter of a new bumblebee black hole
• Geodesic dynamics and multi-inclination images of a non-minimally coupled black hole with a thin accretion disk
• Images and photon regions of continuous photon sphere spacetime