Thin accretion disk signatures in dynamical Chern-Simons modified gravity

Abstract

A promising extension of general relativity is Chern-Simons (CS) modified gravity, in which the Einstein-Hilbert action is modified by adding a parity-violating CS term, which couples to gravity via a scalar field. In this work, we consider the interesting, yet relatively unexplored, dynamical formulation of CS modified gravity, where the CS coupling field is treated as a dynamical field, endowed with its own stress-energy tensor and evolution equation. We consider the possibility of observationally testing dynamical CS modified gravity by using the accretion disk properties around slowly-rotating black holes. The energy flux, temperature distribution, the emission spectrum as well as the energy conversion efficiency are obtained, and compared to the standard general relativistic Kerr solution. It is shown that the Kerr black hole provide a more efficient engine for the transformation of the energy of the accreting mass into radiation than their slowly-rotating counterparts in CS modified gravity. Specific signatures appear in the electromagnetic spectrum, thus leading to the possibility of directly testing CS modified gravity by using astrophysical observations of the emission spectra from accretion disks.

12 pages, 24 figures. V2: 10 pages, 13 figures, significant changes, matches published version

References in corpus (35)

• Dynamics of dark energy
• Modelling the behaviour of accretion flows in X-ray binaries
• Chern-Simons Modified General Relativity
• Low surface brightness galaxies rotation curves in the low energy limit of $R^n$ gravity : no need for dark matter?
• Dynamical Chern-Simons Modified Gravity I: Spinning Black Holes in the Slow-Rotation Approximation
• Dark energy and dark matter as curvature effects
• N-flationary magnetic fields
• Dark matter as a geometric effect in f(R) gravity
• Thin accretion disks in stationary axisymmetric wormhole spacetimes
• Analysis of Rotation Curves in the framework of R^n gravity
• The effects of Chern-Simons gravity on bodies orbiting the Earth
• Electromagnetic signatures of thin accretion disks in wormhole geometries
• Thin accretion disks in f(R) modified gravity models
• Can accretion disk properties distinguish gravastars from black holes?
• Testing Hořava-Lifshitz gravity using thin accretion disk properties
• Generalized virial theorem in f(R) gravity
• How do Black Holes Spin in Chern-Simons Modified Gravity?
• Perturbations of Schwarzschild black holes in Dynamical Chern-Simons modified gravity
• A gravitational-wave probe of effective quantum gravity
• Thin accretion disks onto brane world black holes
• Accretion disk onto boson stars: a way to supplant black holes candidates
• Dark matter and dark energy as a effects of Modified Gravity
• A new PPN parameter to test Chern-Simons gravity
• The cosmological constant and dark energy in braneworlds
• Sterile neutrino dark matter in $B-L$ extension of the standard model and galactic 511 keV line
• Perturbations of Schwarzschild Black Holes in Chern-Simons Modified Gravity
• Parametrized Post-Newtonian Expansion of Chern-Simons Gravity
• Thin accretion disks around neutron and quark stars
• Can stellar mass black holes be quark stars?
• Chern-Simons Modified Gravity as a Torsion Theory and its Interaction with Fermions
• Does a black hole rotate in Chern-Simons modified gravity?
• Papapetrou Energy-Momentum Tensor for Chern-Simons Modified Gravity
• Flat rotation curves in Chern-Simons modified gravity
• Einstein-Cartan formulation of Chern-Simons Lorentz-violating Gravity
• Chern-Simons Modified General Relativity: Conserved charges

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• f(R,T) gravity
• Testing black hole candidates with electromagnetic radiation
• Testing General Relativity with Low-Frequency, Space-Based Gravitational-Wave Detectors
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• Black Hole Based Tests of General Relativity
• Constraining the quadrupole moment of stellar-mass black-hole candidates with the continuum fitting method
• Can accretion disk properties observationally distinguish black holes from naked singularities?
• Challenging the Presence of Scalar Charge and Dipolar Radiation in Binary Pulsars
• Sgr A* and General Relativity
• Testing the Kerr black hole hypothesis
• Testing the no-hair theorem with the continuum-fitting and the iron line methods: a short review
• Testing the No-Hair Theorem with Observations of Black Holes in the Electromagnetic Spectrum
• K$\alpha$ iron line profile from accretion disks around regular and singular exotic compact objects
• Thin Accretion Disk around a four-dimensional Einstein-Gauss-Bonnet Black Hole
• Thin accretion disk signatures of slowly rotating black holes in Hořava gravity
• Shadows of CPR black holes and tests of the Kerr metric
• Measuring the Kerr spin parameter of a non-Kerr compact object with the continuum-fitting and the iron line methods
• The final stages of accretion onto non-Kerr compact objects
• Thin Accretion Disk onto slowly rotating black holes in Einstein-Æther theory
• Fundamental Physics and General Relativity with the LARES and LAGEOS satellites
• Black hole solutions in the quadratic Weyl conformal geometric theory of gravity
• Testing the No-Hair Theorem with Observations of Black Holes in the Electromagnetic Spectrum
• Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair
• Thin accretion disks around rotating black holes in $4D$ Einstein-Gauss-Bonnet gravity
• Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter
• Shadow revisiting and weak gravitational lensing with Chern-Simons modification
• Spherically symmetric static vacuum solutions in hybrid metric-Palatini gravity
• Landau damping for gravitational waves in parity-violating theories
• Properties of a thin accretion disk around a rotating non-Kerr black hole
• Geodetic precession and strong gravitational lensing in the dynamical Chern-Simons modified gravity
• Thin accretion disks around traversable wormholes
• Thin accretion disks and charged rotating dilaton black holes
• Scalar field excited around a rapidly rotating black hole in Chern-Simons modified gravity
• Thin accretion disk around a Kaluza-Klein black hole with squashed horizons
• Thin accretion disks around cold Bose-Einstein Condensate stars
• Distinguishing black holes and naked singularities with iron line spectroscopy
• Circular orbits and thin accretion disk around a quantum corrected black hole
• Implications of Einstein-Maxwell dilaton-axion gravity from the black hole continuum spectrum
• Distinguishing Brans-Dicke-Kerr type naked singularities and black holes with their thin disk electromagnetic radiation properties
• Testing Chern-Simons gravity with black holes?
• Accretion disks around neutron and strange stars in ${\mathcal{R}}^2$ gravity
• Shadows and accretion disk images of charged rotating black hole in modified gravity theory
• Thin accretion disk around the distorted Schwarzschild black hole
• The Maxwell-Chern-Simons gravity and its cosmological implications
• Thin accretion disk around black hole in Einstein-Maxwell-scalar theory
• Study of relativistic accretion flow around KTN black hole with shocks
• Study of relativistic accretion flow in Kerr-Taub-NUT spacetime
• Static spherically symmetric three-form stars
• Thin accretion disk signatures in hybrid metric-Palatini gravity
• Curved accretion disks around rotating black holes without reflection symmetry
• Galactic black hole immersed in a dark halo with its surrounding thin accretion disk
• Black hole solutions in modified gravity induced by quantum metric fluctuations
• Slow-rotating charged black hole solution in dynamical Chern-Simons modified gravity
• Astrophysical and electromagnetic emissivity properties of black holes surrounded by a quintessence type exotic fluid in the Scalar-Vector-Tensor Modified Gravity
• Astrophysics with the Laser Interferometer Space Antenna
• Diagnostic Approaches for Interacting generalized holographic Ricci Dark Energy Models
• Superradiance scattering of scalar, electromagnetic, and gravitational fields and thin accretion disk around non-commutating Kerr black hole
• Radiative properties of thin accretion disks around rotating short-hairy black holes
• A study for testing the Kerr metric with AGN iron line eclipses
• Tests of General Relativity using black hole X-ray data
• Structure of the thin disk in the background of a distorted naked singularity versus a distorted static black hole
• Relativistic Accretion Flow in a Generic Class of Spherically Symmetric Static Spacetime
• Stability analysis of geodesics in dynamical Chern-Simons black holes: a geometrical perspective