Shadows and Observational Images of a Schwarzschild-like Black Hole Surrounded by a Dehnen-type Dark Matter Halo

Abstract

This paper investigates the optical appearance of a Schwarzschild-like black hole (BH) surrounded by a Dehnen-(1, 4, 5/2) type dark matter (DM) halo, with a focus on how the DM halo's density ${\rho }_s$ and radius $r_s$ influence the BH's shadow and photon ring. First, the radius $r_h$ of the BH's event horizon and the equation of motion for photons were derived, and observational data from the Event Horizon Telescope (EHT) for M87* were used to constrain the parameters ${\rho }_s$ and $r_s$ of the DM halo. Afterward, by varying the values of ${\rho }_s$ and $r_s$, key parameters such as the effective potential $V_{eff}$ of photons, the critical impact parameter $b_{ph}$, the radius $r_{isco}$ of the innermost stable circular orbit, and the radius $r_{ph}$ of the photon sphere were calculated for each case. It was found that as ${\rho }_s$ and $r_s$ increase, the above mentioned parameters all show an increasing trend. Subsequently, we investigated the optical appearance of the BH illuminated by two types of accretion models: optically and geometrically thin disk models and spherical accretion models. The findings indicate that as ${\rho }_s$ and $r_s$ increase, the peak of the received intensity shifts toward a higher impact parameter $b$, resulting in a distinct optical appearance.

arXiv comment28 pages,14 figures

References in corpus (73)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Structure of Cold Dark Matter Halos
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• The Black Hole in Three Dimensional Space Time
• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• A direct empirical proof of the existence of dark matter
• Quasinormal modes of black holes and black branes
• First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
• Tests of general relativity with GW150914
• First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
• Black holes and the butterfly effect
• Hot Accretion Flows Around Black Holes
• The Structure of Dark Matter Haloes in Dwarf Galaxies
• First M87 Event Horizon Telescope Results. II. Array and Instrumentation
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• SPARC: Mass Models for 175 Disk Galaxies with Spitzer Photometry and Accurate Rotation Curves
• Black Hole Shadows, Photon Rings, and Lensing Rings
• Empirical models for Dark Matter Halos. I. Nonparametric Construction of Density Profiles and Comparison with Parametric Models
• Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image
• Measurement of the Kerr Spin Parameter by Observation of a Compact Object's Shadow
• Shadow of rotating regular black holes
• The Extended Rotation Curve and the Dark Matter Halo of M33
• Shadow of a black hole surrounded by dark matter
• Can the supermassive objects at the centers of galaxies be traversable wormholes? The first test of strong gravity for mm/sub-mm VLBI facilities
• Shadow and Deflection Angle of Rotating Black Holes in Perfect Fluid Dark Matter with a Cosmological Constant
• Black Hole Parameter Estimation from Its Shadow
• Black Hole Surrounded by a Dark Matter Halo in the M87 Galactic Center and its Identification with Shadow Images
• Shapes of rotating nonsingular black hole shadows
• Probing a nonlinear electrodynamics black hole with thin accretion disk, shadow and deflection angle with M87* and Sgr A* from EHT
• Black Hole Space-time In Dark Matter Halo
• Influence of Quantum Correction on the Black Hole Shadows, Photon Rings and Lensing Rings
• Rotating Black Hole Shadow in Perfect Fluid Dark Matter
• Solutions of the Einstein equations for a black hole surrounded by a galactic halo
• The shadows and observational appearance of a noncommutative black hole surrounded by various profiles of accretions
• Dehnen halo effect on a black hole in an ultra-faint dwarf galaxy
• Shadows and rings of the Kehagias-Sfetsos black hole surrounded by thin disk accretion
• QED and accretion flow models effect on optical appearance of Euler-Heisenberg black holes
• Investigating shadow images and rings of the charged Horndeski black hole illuminated by various thin accretions
• Rings and images of Horndeski hairy black hole illuminated by various thin accretions
• The Optical Appearance of Charged Four-Dimensional Gauss-Bonnet Black Hole with Strings Cloud and Non-Commutative Geometry Surrounded by Various Accretions Profiles
• The feature of shadow images and observed luminosity of the Bardeen black hole surrounded by different accretions
• Black hole surrounded by the pseudo-isothermal dark matter halo
• Thermodynamics and Null Geodesics of a Schwarzschild Black Hole Surrounded by a Dehnen Type Dark Matter Halo
• Images from disk and spherical accretions of hairy Schwarzschild black holes
• Shadow and deflection angle of asymptotic, magnetically-charged, non-singular black hole
• Observable characteristics of the charged black hole surrounded by thin disk accretion in Rastall gravity
• Optical appearance of black holes surrounded by a dark matter halo
• Gravitational ringing and superradiant instabilities of the Kerr-like black holes in a dark matter halo
• Images of hairy Reissner-Nordström black hole illuminated by static accretions
• Shadows, rings and optical appearance of a magnetically charged regular black hole illuminated by various accretion disks
• Observational Appearances of Magnetically Charged Black Holes in Born-Infeld Electrodynamics
• Quasinormal Ringing and Shadows of Black Holes and Wormholes in Dark Matter-Inspired Weyl Gravity
• Possibility of Identifying Matter around Rotating Black Hole with Black Hole Shadow
• Quasinormal modes and shadow of Schwarzschild black holes embedded in a Dehnen type dark matter halo exhibiting string cloud
• The effect of scalar hair on the charged black hole with the images from accretions disk
• Exploring Nonlinear Electrodynamics Theories: Shadows of Regular Black Holes and Horizonless Ultra-Compact Objects
• Observational Signatures: Shadow cast by the effective metric of photons for black holes with rational non-linear electrodynamics
• Geodesic structure, shadow and optical appearance of black hole immersed in Chaplygin-like dark fluid
• Shadows and optical appearance of quantum-corrected black holes illuminated by static thin accretions
• Periodic orbits and their gravitational wave radiations in black hole with dark matter halo
• Modeling the black holes surrounded by a dark matter halo in the galactic center of M87
• Dynamics of null particles and shadow for general rotating black hole
• Observational signatures of a static $f(R)$ black hole with thin accretion disk
• Shadows and rings of a de Sitter-Schwarzschild black hole
• Thermodynamics, Weak Gravitational Lensing, and Parameter Estimation of a Schwarzschild Black Hole Immersed in Hernquist Dark Matter Halo
• Geodesics and scalar perturbations of Schwarzschild black holes embedded in a Dehnen-type dark matter halo with quintessence
• Gravitational lensing by a Bronnikov-Kim wormhole under a weak-field approximation and in a strong deflection limit
• Distinguishing black holes with and without spontaneous scalarization in Einstein-scalar-Gauss-Bonnet theories via optical features
• Remarks on the light ring images and the optical appearance of hairy black holes in Einstein-Maxwell-dilaton gravity
• Bounds for Lyapunov exponent of circular light orbits in black holes

Cited by in corpus (1)

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