Equatorial orbits and imaging of hairy cubic Galileon black holes
arXiv:2103.01827 · doi:10.1103/PhysRevD.104.124034
Abstract
Null and timelike equatorial orbits are investigated in a family of hairy black holes in the cubic Galileon theory. These include rotating generalizations of static black hole metrics supporting a time-dependent scalar field. Depending on the coupling and rotation, the properties of the geodesics expectedly deviate from general relativity. In particular, it is found that stable circular geodesics only exist below a critical coupling, which is related to the existence of an outermost stable circular orbit. Focusing on the strong-field region, images of an accretion disk are also produced to highlight tendencies that would constrain the model given further accurate observations of supermassive black holes.
arXiv comment22 pages, 7 figures, version published in PRD
References in corpus (88)
- First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- 4D Gravity on a Brane in 5D Minkowski Space
- The galileon as a local modification of gravity
- Chameleon Fields: Awaiting Surprises for Tests of Gravity in Space
- Hot Accretion Flows Around Black Holes
- Generalized G-inflation: Inflation with the most general second-order field equations
- Massive Gravity
- Theoretical Aspects of Massive Gravity
- Covariant Galileon
- Dark Energy after GW170817: dead ends and the road ahead
- Testing the nature of dark compact objects: a status report
- Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
- Dark Energy after GW170817 and GRB170817A
- Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors
- Science with the space-based interferometer LISA. V: Extreme mass-ratio inspirals
- Symmetron Fields: Screening Long-Range Forces Through Local Symmetry Restoration
- Foundations of Black Hole Accretion Disk Theory
- LISA Capture Sources: Approximate Waveforms, Signal-to-Noise Ratios, and Parameter Estimation Accuracy
- First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer
- Black hole hair in generalized scalar-tensor gravity
- Classical and Quantum Consistency of the DGP Model
- Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*
- Dressing a black hole with a time-dependent Galileon
- Black hole hair in generalized scalar-tensor gravity: An explicit example
- An introduction to the Vainshtein mechanism
- Evading Equivalence Principle Violations, Cosmological and other Experimental Constraints in Scalar Field Theories with a Strong Coupling to Matter
- Constraints on black-hole charges with the 2017 EHT observations of M87*
- Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole
- Environmental Dependence of Masses and Coupling Constants
- A no-hair theorem for the galileon
- Black holes with scalar hair in light of the Event Horizon Telescope
- k-Mouflage gravity
- Black hole shadow in an asymptotically-flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes
- The innermost stable circular orbit and shadow in the novel Einstein-Gauss-Bonnet gravity
- Conditions for the cosmological viability of the most general scalar-tensor theories and their applications to extended Galileon dark energy models
- The Shape of the Black Hole Photon Ring: A Precise Test of Strong-Field General Relativity
- Speed of Gravitational Waves and the Fate of Scalar-Tensor Gravity
- GYOTO: a new general relativistic ray-tracing code
- Imaging a boson star at the Galactic center
- A formal introduction to Horndeski and Galileon theories and their generalizations
- How to tell an accreting boson star from a black hole
- Black holes and stars in Horndeski theory
- Measurement of the spin of the M87 black hole from its observed twisted light
- Black hole mimicker hiding in the shadow: Optical properties of the -metric
- Galileons from Lovelock actions
- Shadow casted by a Konoplya-Zhidenko rotating non-Kerr black hole
- Nonlinear structure formation in the Cubic Galileon gravity model
- The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA
- Can we distinguish black holes from naked singularities by the images of their accretion disks?
- Evolution of linear cosmological perturbations and its observational implications in Galileon-type modified gravity
- Constraints on Shift-Symmetric Scalar-Tensor Theories with a Vainshtein Mechanism from Bounds on the Time Variation of G
- Does the black hole shadow probe the event horizon geometry?
- Galileons in the Sky
- Astrophysical imaging of Kerr black holes with scalar hair
- Geometric modeling of M87* as a Kerr black hole or a non-Kerr compact object
- Slowly rotating black hole solutions in Horndeski gravity
- Dark energy after GW170817, revisited
- Polarized Synchrotron Emissivities and Absorptivities for Relativistic Thermal, Power-Law, and Kappa Distribution Functions
- Shadows of Kerr-like black holes in a modified gravity theory
- ALMA Polarimetry of Sgr A*: Probing the Accretion Flow from the Event Horizon to the Bondi Radius
- Time-dependent spherically symmetric covariant Galileons
- The resolved size and structure of hot dust in the immediate vicinity of AGN
- Laboratory Tests of the Galileon
- An upper limit on the spin of SgrA based on stellar orbits in its vicinity
- EHT tests of the strong-field regime of General Relativity
- Cosmological self-tuning and local solutions in generalized Horndeski theories
- Imaging a non-singular rotating black hole at the center of the Galaxy
- The masses and shadows of the black holes Sagittarius A* and M87* in modified gravity (MOG)
- Measuring spin of a supermassive black hole at the Galactic centre -- Implications for a unique spin
- Black holes in a cubic Galileon universe
- Can supermassive black hole shadows test the Kerr metric?
- Shadow of charged black holes in Gauss-Bonnet gravity
- Shadows of Exact Binary Black Holes
- Comparing timelike geodesics around a Kerr black hole and a boson star
- Probing the innermost accretion flow geometry of Sgr A* with Event Horizon Telescope
- Galileon accretion
- Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair
- A no-hair theorem for stars in Horndeski theories
- ISCOs and OSCOs in the presence of positive cosmological constant
- Hairy rotating black holes in cubic Galileon theory
- Modelling the black hole silhouette in Sgr A* with ion tori
- The Spin of M87*
- 3+1 geodesic equation and images in numerical spacetimes
- Testing General Relativity with the Black Hole Shadow Size and Asymmetry of Sagittarius A*: Limitations from Interstellar Scattering
- A magnetized torus for modeling Sgr A* millimeter images and spectra
- Persistent Non-Gaussian Structure in the Image of Sagittarius A* at 86 GHz
- Astrophysical Black Holes: A Review
- Note on equatorial geodesics in circular spacetimes