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We evolve a binary black hole system bearing a mass ratio of $q=m_1/m_2=2/3$ and individual spins of $S^z_1/m_1^2=0.95$ and $S^z_2/m_2^2=-0.95$ in a configuration where the large black hole has its spin antialigned with the orbital angular…

General Relativity and Quantum Cosmology · Physics 2018-05-23 James Healy , Carlos O. Lousto , Ian Ruchlin , Yosef Zlochower

Multi-spinning higher dimensional Kerr-AdS black holes admit the stable small-large black hole phase transition of van der Waals type. In this paper, we study the exact critical phenomena and phase structure in five-dimensional spacetime.…

General Relativity and Quantum Cosmology · Physics 2019-09-27 Shao-Wen Wei , Yu-Xiao Liu

In this paper, we investigate the evaporation of the quantum Oppenheimer-Snyder black hole. Within a semiclassical framework, we compute the energy emission of Hawking radiation by introducing a massless scalar field as a test field,…

General Relativity and Quantum Cosmology · Physics 2026-01-01 Hongwei Tan , Kui Xiao , Rong-zhen Guo , Shoucheng Wang

We study the problem of steady-state spherical accretion onto a black hole, in which the internal energy of the flow is governed by radiation and photon diffusion dominates the energy flux at large radii. In the free-fall limit, the fluid…

High Energy Astrophysical Phenomena · Physics 2025-07-24 Tamar Faran , Eliot Quataert

We study conformally-flat initial data for an arbitrary number of spinning black holes with exact analytic solutions to the momentum constraints constructed from a linear combination of the classical Bowen-York and conformal Kerr extrinsic…

General Relativity and Quantum Cosmology · Physics 2012-06-15 Carlos O. Lousto , Hiroyuki Nakano , Yosef Zlochower , Bruno C. Mundim , Manuela Campanelli

The superradiance instability of rotating black holes leads to the formation of an ultralight boson cloud with distinctive observational signatures, making black holes an effective probe of ultralight bosons. However, around black holes in…

General Relativity and Quantum Cosmology · Physics 2025-03-03 Hui-Yu Zhu , Xi Tong , Giorgio Manzoni , Yanjiao Ma

The recent discovery of luminous quasars up to a redshift z=6.43 has renewed interest in the formation of black holes massive enough to power quasars. If black holes grow by Eddington-limited gas accretion with a radiative efficiency of at…

Astrophysics · Physics 2009-11-10 Jaiyul Yoo , Jordi Miralda-Escude

In this work the \textit{chemistry} of asymptotically AdS black hole, charged and uncharged, solutions of Pure Lovelock gravity is discussed. For this the mass parameter of black holes is identified with the enthalpy of the system together…

General Relativity and Quantum Cosmology · Physics 2020-05-12 Milko Estrada , Rodrigo Aros

In this work, we explore the thermodynamic topology of phantom AdS black holes in the context of massive gravity. To this end, we evaluate these black holes in two distinct ensembles: the canonical and grand canonical ensembles (GCE). We…

General Relativity and Quantum Cosmology · Physics 2024-08-19 Hao Chen , Di Wu , Meng-Yao Zhang , Hassan Hassanabadi , Zheng-Wen Long

In this paper we investigate a steady accretion within the Einstein-Straus vacuole, in the presence of the cosmological constant. The dark energy damps the mass accretion rate and --- above certain limit --- completely stops the steady…

General Relativity and Quantum Cosmology · Physics 2015-06-12 Janusz Karkowski , Edward Malec

The standard approach to the numerical evolution of black hole data using the ADM formulation with maximal slicing and vanishing shift is extended to non-symmetric black hole data containing black holes with linear momentum and spin by…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Bernd Bruegmann

In this paper, we study the thermodynamic behavior of charged AdS black holes in a conformal holographic extended thermodynamic. Our setup is constructed using a new dictionary that relates AdS black hole quantities to the corresponding…

High Energy Physics - Theory · Physics 2024-03-26 Yahya Ladghami , Taoufik Ouali

We perform fully non-linear numerical simulations of charged-black-hole collisions, described by the Einstein-Maxwell equations, and contrast the results against analytic expectations. We focus on head-on collisions of non-spinning black…

General Relativity and Quantum Cosmology · Physics 2012-07-06 Miguel Zilhão , Vitor Cardoso , Carlos Herdeiro , Luis Lehner , Ulrich Sperhake

We consider the stability of black holes within both classical general relativity and the semiclassical thermodynamic description. In particular, we study linearised perturbations and their contribution to the gravitational partition…

High Energy Physics - Theory · Physics 2010-06-29 Ricardo Monteiro

We perform global three-dimensional (3D) radiation-hydrodynamic (RHD) simulations of out- flow from supercritical accretion flow around a 10 Msun black hole. We only solve the outflow part, starting from the axisymmetric 2D simulation data…

High Energy Astrophysical Phenomena · Physics 2018-02-28 Hiroshi Kobayashi , Ken Ohsuga , Hiroyuki R. Takahashi , Tomohisa Kawashima , Yuta Asahina , Shun Takeuchi , Shin Mineshige

Black holes have turned into cosmic laboratories to search for ultra-light scalars by virtue of the superradiant instability. In this paper we present a detailed study of the impact of the superradiant evolution on the black hole shadow and…

General Relativity and Quantum Cosmology · Physics 2020-07-03 Gastón Creci , Stefan Vandoren , Helvi Witek

The discovery of supermassive black holes with masses $\gtrsim 10^9 M_\odot$ at redshifts $z\gtrsim 10$ challenges conventional formation scenarios based on baryonic accretion and mergers within the first few hundred million years. We…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-18 Nicolas Sanchis-Gual , Juan Barranco , Juan Carlos Degollado , Darío Nuñez

It has been argued that the rate at which the interior of an AdS black hole evolves is dual to the rate of evolution of the (quantum state of the) strongly coupled matter on the boundary which, according to holography, is dual to the black…

High Energy Physics - Theory · Physics 2024-08-08 Brett McInnes

We consider the thermodynamics of a charged black hole enclosed in a cavity. The charge in the cavity and the temperature at the walls are fixed so that we have a canonical ensemble. We derive the phase structure and stability of black hole…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Andrew P. Lundgren

We analyze the semiclassical stability of the Schwarzschild AdS black hole in the Euclidean partition function approach. We perform this computation in the large $D$ limit and focus on scalar perturbations. We obtain the equations for…

General Relativity and Quantum Cosmology · Physics 2022-08-04 Amruta Sadhu , Vardarajan Suneeta
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