On null geodesics and shadow of hairy black holes in Einstein-Maxwell-dilaton gravity

Abstract

The time-like and null-like geodesics around compact objects are some of the best tools to classify and understand the structure of a space-time. In this paper, we study the null geodesics around charged static dilaton black holes in Einstein-Maxwell-dilaton gravity. The physical parameters for non-radial geodesics including the effective potential, effective force, radius of the photon sphere and impact parameter are obtained and effects of the charge parameter and dilaton coupling constant on these quantities are studied. Possible photon motions for different values of the impact parameter are analyzed and unstable circular orbits and unbounded orbits are plotted. These results are compared to that of the Schwarzschild, Reissner-Nordstrom and Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black holes. Also, we study the shadow cast by a dilaton black hole and investigate how the dilaton coupling affects the size of the black hole shadow. Finally, as an application of null geodesics, we calculate the deflection of light and investigate the effects of the model parameters on the bending angle.

arXiv comment19 pages, 13 figures, to appear in PRD

References in corpus (72)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• 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
• The geometry of photon surfaces
• Rotating Charged Black Hole Solution in Heterotic String Theory
• Hunting for extra dimensions in the shadow of M87*
• Observing the shadow of Einstein-Maxwell-Dilaton-Axion black hole
• Null geodesics and shadow of a rotating black hole in extended Chern-Simons modified gravity
• Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors
• Shadow of a Kaluza-Klein rotating dilaton black hole
• Shadows of Einstein-dilaton-Gauss-Bonnet black holes
• Shadows and photon spheres with spherical accretions in the four-dimensional Gauss-Bonnet black hole
• Motion of charged test particles in Reissner--Nordström spacetime
• Silhouette of M87*: A new window to peek into the world of hidden dimensions
• Rotating Dilaton Black Holes
• Influence of quintessence dark energy on the shadow of black hole
• Analytical solution of the geodesic equation in Kerr-(anti) de Sitter space-times
• Schwarzschild black hole surrounded by quintessence: Null geodesics
• Phase transition and thermodynamic geometry of Einstein-Maxwell-dilaton black holes
• Weak Gravitational lensing by phantom black holes and phantom wormholes using the Gauss-Bonnet theorem
• Equatorial circular motion in Kerr spacetime
• Geodesics of electrically and magnetically charged test particles in the Reissner-Nordström space-time: analytical solutions
• No-Hair Theorem in the Wake of Event Horizon Telescope
• Hairy Black Holes and Null Circular Geodesics
• Energetics and optical properties of $6$-dimensional rotating black hole in pure Gauss-Bonnet gravity
• Precise relativistic orbits in Kerr and Kerr-(anti) de Sitter spacetimes
• Optical properties of Kerr-Newman spacetime in the presence of plasma
• Einstein-Æther Gravity in the light of Event Horizon Telescope Observations of M87*
• Black Hole Dynamics in Einstein-Maxwell-Dilaton Theory
• Charged particle motion in Kerr-Newmann space-times
• Black hole merger estimates in Einstein-Maxwell and Einstein-Maxwell-dilaton gravity
• Geodesic Motion in Schwarzschild Spacetime Surrounded by Quintessence
• Test particle motion around black hole in Einstein-Maxwell-scalar theory
• Motion of charged particles on the Reissner-Nordström (Anti)-de Sitter black holes
• Analytical solutions of the geodesic equation in the spacetime of a black hole in f(R) gravity
• Timelike Geodesic Motion in Horava-Lifshitz Spacetime
• Electrically charged black holes in linear and nonlinear electrodynamics: Geodesic analysis and scalar absorption
• Shadow and Photon Sphere of Black Hole in Clouds of Strings and Quintessence
• Geodesics and periodic orbits in Kehagias-Sfetsos black holes in deformed Hourava-Lifshitz gravity
• Accretion disks around the Gibbons-Maeda-Garfinkle-Horowitz-Strominger charged black holes
• Null Geodesics of Charged Black Holes in String Theory
• Quasinormal modes of weakly charged Einstein-Maxwell-dilaton black holes
• Shadow of charged wormholes in Einstein-Maxwell-dilaton theory
• Light paths of normal and phantom Einstein-Maxwell-dilaton black holes
• Null Geodesics in Brane World Universe
• Geodesic motion around traversable wormholes supported by a massless conformally-coupled scalar field
• Geodesic equations in the static and rotating dilaton black holes: Analytical solutions and applications
• Geodesic motion around hairy black holes
• Spinning a charged dilaton black hole
• Null trajectories and bending of light in charged black holes with quintessence
• Thin accretion disks and charged rotating dilaton black holes
• Analytic solutions of the geodesic equation for Einstein-Maxwell-dilaton-axion black holes
• Motion of Test Particles around a Charged Dilatonic Black Hole
• Particle motion in Horava-Lifshitz black hole space-times
• Deflection of Light and Shadow Cast by a Dual Charged Stringy Black Hole
• Shadows and thin accretion disk images of the $\gamma$-metric
• Geodesic Structure of the Quantum-Corrected Schwarzschild Black Hole Surrounded by Quintessence
• Null geodesics and shadow of 4$D$ Einstein-Gauss-Bonnet black holes surrounded by quintessence
• Null paths on a toroidal topological black hole in conformalWeyl gravity
• On the trajectories of null and timelike geodesics in different wormhole geometries
• Study of the geodesic equations of a spherical symmetric spacetime in conformal gravity
• Superradiance around Rotating Dilatonic Black Hole
• Geodesic of nonlinear electrodynamics and stable photon orbits
• On Geodesic Motion in Horava-Lifshitz Gravity
• Motion of magnetically charged particles in a magnetically charged stringy black hole spacetime
• Null and Timelike Geodesics Near the Throats of Phantom Scalar Field Wormholes
• Dynamical analysis of null geodesics in brane-world spacetimes
• Shadow of axisymmetric, stationary and asymptotically flat black holes in the presence of plasma
• Shadows of Lorentzian traversable wormholes
• Behavior of null-geodesics in the interior of Reissner-Nordstrom black hole
• Quasinormal modes and shadow of noncommutative black hole

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• Probing the Lorentz Symmetry Violation Using the First Image of Sagittarius A*: Constraints on Standard-Model Extension Coefficients
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• Galactic black hole immersed in a dark halo with its surrounding thin accretion disk
• Remarks on the light ring images and the optical appearance of hairy black holes in Einstein-Maxwell-dilaton gravity
• On optical appearance of Einstein-Maxwell-Æther black holes surrounded by various accretions
• Trajectories of photons around a rotating black hole with unusual asymptotics
• Modelling the Sgr A${}^{\ast }$ and M87${}^{\ast }$ shadows by using the Kerr-Taub-NUT metrics in the presence of a scalar field
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• Scattering and absorption by extra-dimensional black holes with GUP
• Neutral particle collisions near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes after shadow observations
• Lyapunov exponents and geodesic stability of Schwarzschild black hole in the non-commutative gauge theory of gravity
• Shadows cast by a class of rotating black bounces with an anisotropic fluid
• Geodesic dynamics in brane-de Sitter wormholes
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