Thin accretion disks around rotating black holes in $4D$ Einstein-Gauss-Bonnet gravity

Abstract

Recently, Kumar and Ghosh have derived Kerr-like rotating black hole solutions in the framework of four-dimensional Einstein-Gauss-Bonnet theory of gravity and investigated the black hole shadow. Using the steady-state Novikov-Thorne model, we study thin accretion disk processes for such rotating black holes including the energy flux, temperature distribution, emission spectrum, energy conversion efficiency as well as the radius of the innermost stable circular orbit. We also study the effects of the Gauss-Bonnet coupling parameter $\alpha$ on these quantities. The results are compared to slowly rotating relativistic Kerr black holes which show that for a positive Gauss-Bonnet coupling, thin accretion disks around rotating black holes in four-dimensional Einstein-Gauss-Bonnet gravity are hotter and more efficient than that for Kerr black holes with the same rotation parameter $a$, while for a negative coupling they are cooler and less efficient. Thus the accretion disk processes may be considered as tools for testing Einstein-Gauss-Bonnet gravity using astrophysical observations.

18 pages, 8 figures, to appear in EPJC

References in corpus (14)

• On Taking the $D\to 4$ limit of Gauss-Bonnet Gravity: Theory and Solutions
• Thin accretion disks in stationary axisymmetric wormhole spacetimes
• Thermodynamics and P-v criticality of Bardeen-AdS Black Hole in 4-D Einstein-Gauss-Bonnet Gravity
• Thin accretion disks in f(R) modified gravity models
• Can accretion disk properties observationally distinguish black holes from naked singularities?
• Testing Hořava-Lifshitz gravity using thin accretion disk properties
• Thin accretion disks onto brane world black holes
• Accretion disk onto boson stars: a way to supplant black holes candidates
• Accretion disks around black holes in modified strong gravity
• Dust collapse in 4D Einstein-Gauss-Bonnet gravity
• Accretion disks around the Gibbons-Maeda-Garfinkle-Horowitz-Strominger charged black holes
• Testing Einstein-dilaton-Gauss-Bonnet gravity from the reflection spectrum of accreting black holes
• Thin accretion disks and charged rotating dilaton black holes
• Growth of matter density perturbations in 4D Einstein-Gauss-Bonnet gravity

Cited by in corpus (26)

• The 4D Einstein-Gauss-Bonnet Theory of Gravity: A Review
• Probing a nonlinear electrodynamics black hole with thin accretion disk, shadow and deflection angle with M87* and Sgr A* from EHT
• Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter
• Black Holes in the Scalar-Tensor Formulation of 4D Einstein-Gauss-Bonnet Gravity: Uniqueness of Solutions, and a New Candidate for Dark Matter
• Nonlinearly charged black holes: Shadow and Thin-accretion disk
• Image of Bonnor black dihole with a thin accretion disk and its polarization information
• Null geodesics and shadow of 4$D$ Einstein-Gauss-Bonnet black holes surrounded by quintessence
• WGC as WCCC protector: The Synergistic Effects of various Parameters in Identifying WGC candidate Models
• Thin accretion disks around a black hole in Einstein-Aether-scalar theory
• Possible signatures of higher dimension in thin accretion disk around brane world black hole
• Shadow of Schwarzschild Black Hole in the Cold Dark Matter Halo
• The Integrated Sachs-Wolfe Effect in 4D Einstein-Gauss-Bonnet Gravity
• Thin accretion disk images of the black hole in symmergent gravity
• Thermodynamics of static and stationary black holes in Einstein-Gauss-Bonnet gravity with dark matter
• Curved accretion disks around rotating black holes without reflection symmetry
• New Non-Abelian Reissner-Nordström Black Hole Solutions in the Generalized SU(2) Proca Theory And Some Astrophysical Implications
• Galactic black hole immersed in a dark halo with its surrounding thin accretion disk
• Multi-horizons black hole solutions, photon sphere and perihelion shift in weak ghost-free Gauss-Bonnet theory of gravity
• Comparing accretion disk profiles of Bogush-Galt'sov naked singularity and Kerr black hole
• Circular orbits and accretion disk around a deformed-Schwarzschild black hole in loop quantum gravity
• Slowly Rotating Black Holes in 4D Einstein Gauss-Bonnet Gravity
• Shadow and thin accretion disk around Ayón-Beato-García black hole coupled with cloud of strings
• Observational properties of a Schwarzschild black hole surrounded by a Dehnen-type dark matter halo
• Radiative properties of thin accretion disks around rotating short-hairy black holes
• Thin Accretion Disks around Rotating Charged Black Holes in an Effective Higher-Curvature Spacetime
• Stability analysis of geodesics in dynamical Chern-Simons black holes: a geometrical perspective