scholarly journals Improved initial data for black hole binaries by asymptotic matching of post-Newtonian and perturbed black hole solutions

2006 ◽  
Vol 74 (6) ◽  
Author(s):  
Nicolás Yunes ◽  
Wolfgang Tichy
Keyword(s):  
Black Hole ◽  
Initial Data ◽  
Black Hole Binaries ◽  
Asymptotic Matching ◽  
Black Hole Solutions

scholarly journals Puncture initial data for black-hole binaries with high spins and high boosts

2017 ◽  
Vol 95 (2) ◽  
Author(s):  
Ian Ruchlin ◽  
James Healy ◽  
Carlos O. Lousto ◽  
Yosef Zlochower
Keyword(s):  
Black Hole ◽  
Initial Data ◽  
Black Hole Binaries

scholarly journals Scalar modes, spontaneous scalarization and circular null-geodesics of black holes in scalar-Gauss–Bonnet gravity

2020 ◽  
Vol 29 (11) ◽  
pp. 2041006 ◽  
Author(s):  
Caio F. B. Macedo
Keyword(s):  
Black Holes ◽  
General Relativity ◽  
Black Hole ◽  
Scalar Field ◽  
Quasinormal Modes ◽  
Mode Analysis ◽  
Bonnet Gravity ◽  
Black Hole Binaries ◽  
The Impact ◽  
Black Hole Solutions

In general relativity, astrophysical black holes (BHs) are simple objects, described by just their mass and spin. These simple solutions are not exclusive to general relativity, as they also appear in theories that allow for an extra scalar degree of freedom. Recently, it was shown that some theories which couple a scalar field with the Gauss–Bonnet invariant can have the same classic black hole solutions from general relativity as well as hairy BHs. These scalarized solutions can be stable, having an additional “charge” term that has an impact on the gravitational-wave emission by black hole binaries. In this paper, we overview black hole solutions in scalar-Gauss–Bonnet gravity, considering self-interacting terms for the scalar field. We present the mode analysis for the monopolar and dipolar perturbations around the Schwarzschild black hole in scalar-Gauss–Bonnet, showing the transition between stable and unstable solutions. We also present the time-evolution of scalar Gaussian wave packets, analyzing the impact of the scalar-Gauss–Bonnet term in their evolution. We then present some scalarized solutions, showing that nonlinear coupling functions and self-interacting terms can stabilize them. Finally, we compute the light-ring frequency and the Lyapunov exponent, which possibly estimate the black hole quasinormal modes in the eikonal limit.

scholarly journals Black hole solutions in modified gravity induced by quantum metric fluctuations

2021 ◽  
Vol 31 ◽  
pp. 100756
Author(s):  
Jin-Zhao Yang ◽  
Shahab Shahidi ◽  
Tiberiu Harko ◽  
Shi-Dong Liang
Keyword(s):  
Black Hole ◽  
Modified Gravity ◽  
Black Hole Solutions ◽  
Metric Fluctuations

scholarly journals New non-extremal and BPS hairy black holes in gauged $$ \mathcal{N} $$ = 2 and $$ \mathcal{N} $$ = 8 supergravity

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Andres Anabalon ◽  
Dumitru Astefanesei ◽  
Antonio Gallerati ◽  
Mario Trigiante
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Boundary Conditions ◽  
Charged Black Hole ◽  
Dual Theory ◽  
Real Numbers ◽  
Hairy Black Holes ◽  
Interpolation Parameter ◽  
Black Hole Solutions ◽  
Extremal Black Holes

Abstract In this article we study a family of four-dimensional, $$ \mathcal{N} $$ N = 2 supergravity theories that interpolates between all the single dilaton truncations of the SO(8) gauged $$ \mathcal{N} $$ N = 8 supergravity. In this infinitely many theories characterized by two real numbers — the interpolation parameter and the dyonic “angle” of the gauging — we construct non-extremal electrically or magnetically charged black hole solutions and their supersymmetric limits. All the supersymmetric black holes have non-singular horizons with spherical, hyperbolic or planar topology. Some of these supersymmetric and non-extremal black holes are new examples in the $$ \mathcal{N} $$ N = 8 theory that do not belong to the STU model. We compute the asymptotic charges, thermodynamics and boundary conditions of these black holes and show that all of them, except one, introduce a triple trace deformation in the dual theory.

Black hole solutions and thermodynamics in the infinite derivative theory of gravity

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Yong Xiao ◽  
Yong Chen ◽  
Haiyuan Feng ◽  
Chenrui Zhu
Keyword(s):  
Black Hole ◽  
Theory Of Gravity ◽  
Infinite Derivative ◽  
Black Hole Solutions

scholarly journals Effective-one-body waveforms from dynamical captures in black hole binaries

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Alessandro Nagar ◽  
Piero Rettegno ◽  
Rossella Gamba ◽  
Sebastiano Bernuzzi
Keyword(s):  
Black Hole ◽  
Black Hole Binaries

scholarly journals Peculiar acceleration of stellar-origin black hole binaries: Measurement and biases with LISA

2020 ◽  
Vol 101 (6) ◽  
Author(s):  
Nicola Tamanini ◽  
Antoine Klein ◽  
Camille Bonvin ◽  
Enrico Barausse ◽  
Chiara Caprini
Keyword(s):  
Black Hole ◽  
Black Hole Binaries
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