Asymptotically flat, parametrized black hole metric preserving Kerr symmetries

@article{Carson2020AsymptoticallyFP,
  title={Asymptotically flat, parametrized black hole metric preserving Kerr symmetries},
  author={Zack Carson and Kent Yagi},
  journal={Physical Review D},
  year={2020}
}
Recently the Event Horizon Telescope Collaboration, with very-long baseline interferometric observations, resolved structure at the scale of ∼5 Schwarzschild radii about the center of M87*, the supermassive black hole resident at the center of Messier 87. This important observation has paved the way for testing what is known as the “no-hair” theorem, stating that isolated black holes are described by the Kerr metric, parametrized only by their mass and spin. Generic, parametrized spacetimes… 

Accurate mapping of spherically symmetric black holes in a parametrized framework

The Rezzolla-Zhidenko (RZ) framework provides an efficient approach to characterize spherically symmetric black hole spacetimes in arbitrary metric theories of gravity using a small number of

Rotating black holes without ℤ2 symmetry and their shadow images

  • Che-yu Chen
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2020
The recent detection of gravitational waves from black hole coalescences and the first image of the black hole shadow enhance the possibilities of testing gravitational theories in the strong-field

Rotating black holes in valid vector-tensor theories after GW170817

Vector-tensor theories beyond General Relativity have widely been studied in the context of ultraviolet completion of gravity, endowing a mass to the graviton and explaining dark energy phenomena. We

Generating rotating spacetime in Ricci-based gravity: naked singularity as a black hole mimicker

Motivated by the lack of rotating solutions sourced by matter in General Relativity as well as in modified gravity theories, we extend a recently discovered exact rotating solution of the minimal

Rotating black hole in 𝖿(𝖱) theory

In general, the field equation of f(R) gravitational theory is very intricate, and therefore, it is not an easy task to derive analytical solutions. We consider rotating black hole spacetime

Chaotic photon orbits and shadows of a non-Kerr object described by the Hartle–Thorne spacetime

The data from the event horizon telescope have provided a novel view of the vicinity of the horizon of a black hole (BH), by imaging the region around the light-ring. They have also raised hopes for

Effective Field Theory for the perturbations of a slowly rotating black hole

Abstract We develop the effective theory for perturbations around black holes with scalar hair, in two directions. First, we show that the scalar-Gauss-Bonnet theory, often used as an example

Modified Gravity Corrections in Fundamental Orbital Frequencies in Kerr Spacetime

As a first step towards the calculation of waveform of Extreme Mass Ratio Inspirals for Modified Gravity theories, we calculate the orbital frequencies of a Small Compact Object inspiralling into a

The shape of the black hole photon ring: A precise test of strong-field general relativity

We propose a new test of strong-field general relativity (GR) based on the universal interferometric signature of the black hole photon ring. The photon ring is a narrow ring-shaped feature,

Slice-reducible conformal Killing tensors, photon surfaces, and shadows

Kirill Kobialko, Igor Bogush, and Dmitri Gal’tsov Faculty of Physics, Moscow State University, 119899, Moscow, Russia Abstract We generalize our recent method for constructing Killing tensors of the

References

SHOWING 1-10 OF 181 REFERENCES

Metric for rapidly spinning black holes suitable for strong-field tests of the no-hair theorem

According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric deviations from the Kerr

Regular Black Hole Metric with Three Constants of Motion

According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric spacetimes that deviate from

On generic parametrizations of spinning black-hole geometries

The construction of a generic parametrization of spinning geometries which can be matched continuously to the Kerr metric is an important open problem in General Relativity. Its resolution is more

Bumpy black holes in alternative theories of gravity

We generalize the bumpy black hole framework to allow for alternative theory deformations. We construct two model-independent parametric deviations from the Kerr metric: one built from a

PHOTON RINGS AROUND KERR AND KERR-LIKE BLACK HOLES

Very long baseline interferometric observations have resolved structure on scales of only a few Schwarzschild radii around the supermassive black holes at the centers of our Galaxy and M87. In the

Axisymmetric black holes allowing for separation of variables in the Klein-Gordon and Hamilton-Jacobi equations

We determine the class of axisymmetric and asymptotically flat black-hole spacetimes for which the test Klein-Gordon and Hamilton-Jacobi equations allow for the separation of variables. The known

General parametrization of axisymmetric black holes in metric theories of gravity

Following previous work of ours in spherical symmetry, we here propose a new parametric framework to describe the spacetime of axisymmetric black holes in generic metric theories of gravity. In this

Testing the No-Hair Theorem with Sgr A*

The no-hair theorem characterizes the fundamental nature of black holes in general relativity. This theorem can be tested observationally by measuring the mass and spin of a black hole as well as its

New parametrization for spherically symmetric black holes in metric theories of gravity

We propose a new parametric framework to describe in generic metric theories of gravity the spacetime of spherically symmetric and slowly rotating black holes. In contrast to similar approaches

Black hole hair in generalized scalar-tensor gravity: An explicit example

In a recent paper we showed that in shift-symmetric Horndeski theory the scalar field is forced to obtain a nontrivial configuration in black hole spacetimes, unless a linear coupling with the
...