Accretion disk around a Schwarzschild black hole in asymptotic safety

Abstract

We study quantum gravity effects on radiation properties of thin accretion disks around a renormalization group improved (RGI-) Schwarzschild black hole. In the infrared (IR) limit of the asymptotically safe theory with higher derivatives, the running Newton coupling G(r) depends on a free parameter which encodes the quantum effects on the spacetime geometry. By varying this parameter, modifications to thermal properties of the disk as the time averaged energy flux, the disk temperature, the differential luminosity, and the conversion efficiency of accreting mass into radiation, are obtained. In addition to a shifting of the radius of the innermost stable circular orbit (ISCO) toward small values, we find an increase of the maximum values of these thermal properties and a greater efficiency than in the classical relativistic regime. We discuss astrophysical applications of these results by using observational data of the stellar-mass black hole candidate LMC X-3. Our findings could, in principle, be used to identify quantum gravity effects through astrophysical observations.

arXiv comment15 pages, 9 figures, 2 tables, discussion expanded, references added, conclusions unchanged, accepted for publication in EPJC

References in corpus (56)

• String Theory and Noncommutative Geometry
• Quantum Gravity at a Lifshitz Point
• Nonperturbative Evolution Equation for Quantum Gravity
• Quantum Geometry and Black Hole Entropy
• Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point
• Loop Quantum Gravity
• The nonperturbative functional renormalization group and its applications
• Renormalization group improved black hole spacetimes
• Spin Foam Models for Quantum Gravity
• Emergence of a 4D World from Causal Quantum Gravity
• Horava-Lifshitz Cosmology
• Quantum Einstein Gravity
• Asymptotic safety in higher-derivative gravity
• The Constant Inner-Disk Radius of LMC X-3: A Basis for Measuring Black Hole Spin
• Matter matters in asymptotically safe quantum gravity
• Asymptotic safety guaranteed
• Asymptotic Safety of Gravity Coupled to Matter
• Thin accretion disks in stationary axisymmetric wormhole spacetimes
• Contraints on Matter from Asymptotic Safety
• Distinguishing black holes from naked singularities through their accretion disk properties
• Can accretion disk properties observationally distinguish black holes from naked singularities?
• Asymptotically Safe Inflation
• Asymptotic safety of quantum gravity beyond Ricci scalars
• Black holes and asymptotically safe gravity
• Asymptotic safety casts its shadow
• Resolving Spacetime Singularities within Asymptotic Safety
• Structural aspects of asymptotically safe black holes
• Aspects of asymptotic safety for quantum gravity
• Covariant Horava-like and mimetic Horndeski gravity: cosmological solutions and perturbations
• Quantum Gravity Effects in the Kerr Spacetime
• Black hole thermodynamics under the microscope
• Black holes in an asymptotically safe gravity theory with higher derivatives
• Asymptotically safe inflation from quadratic gravity
• From renormalization group flows to cosmology
• Shadow and deflection angle of rotating black hole in asymptotically safe gravity
• Quantum Improved Schwarzschild-(A)dS and Kerr-(A)dS Space-times
• Accretion disks around black holes in modified strong gravity
• From a locality-principle for new physics to image features of regular spinning black holes with disks
• Accretion disks around black holes in Scalar-Tensor-Vector Gravity
• Asymptotically Safe Standard Model via Vector-Like Fermions
• Testing slim-disk models on the thermal spectra of LMC X-3
• The Mass of the Black Hole in LMC X-3
• The Low-Spin Black Hole in LMC X-3
• Gravitational collapse in Quantum Einstein Gravity
• Asymptotic Safety, Singularities, and Gravitational Collapse
• Avoidance of singularities in asymptotically safe Quantum Einstein Gravity
• Asymptotically Safe gravity and non-singular inflationary Big Bang with vacuum birth
• Leptogenesis via Higgs Condensate Relaxation
• Improved Reissner-Nordström-(A)dS Black Hole in Asymptotic Safety
• The Effects of Running Gravitational Coupling On Rotating Black Holes
• Shining X-rays on asymptotically safe quantum gravity
• Broadband 'spectro-temporal' features of extragalactic black hole binaries LMC X-1 and LMC X-3: An AstroSat perspective
• Iron line spectroscopy of black holes in asymptotically safe gravity
• Accretion on High Derivative Asymptotically Safe Black Holes
• Classification and Unification of the Microscopic Deterministic Traffic Models with Identical Drivers
• Black holes in asymptotic safety with higher derivatives: accretion and stability analysis

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