Results 31 to 40 of about 2,711,397 (376)

Instability of charged anti-de Sitter black holes

open access: yesPhysics Letters B, 2016
We have studied the instability of charged anti-de Sitter black holes in four- or higher-dimensions under fragmentation. The unstable black holes under fragmentation can be broken into two black holes.
Bogeun Gwak, Bum-Hoon Lee, Daeho Ro
doaj   +1 more source

Thermodynamic and classical instability of AdS black holes in fourth-order gravity [PDF]

open access: yes, 2014
We study thermodynamic and classical instability of AdS black holes in fourth-order gravity. These include the BTZ black hole in new massive gravity, Schwarzschild-AdS black hole, and higher-dimensional AdS black holes in fourth-order gravity.
Moon, Taeyoon, Myung, Yun Soo
core   +2 more sources

Investigating strong gravitational lensing effects by supermassive black holes with Horndeski gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We study gravitational lensing in strong-field limit by a static spherically symmetric black hole in quartic scalar field Horndeski gravity having additional hair parameter q, evading the no-hair theorem.
Jitendra Kumar   +2 more
doaj   +1 more source

Maximal forces and thermodynamic quantities of specific black holes in modified theories of gravity

open access: yesNuclear Physics B, 2023
In this work, we explore the maximum force conjecture and thermal fluctuations for different black holes such as the brane-world black hole, de Rham-Gabadadze-Tolley black hole, Black-Bounce Reisner-Nordström black hole, and renormalization group ...
Abdul Jawad, Usman Zafar
doaj   +1 more source

The Role of Primordial Kicks on Black Hole Merger Rates [PDF]

open access: yes, 2005
Primordial stars are likely to be very massive $\geq30\Msun$, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos in the mass range $10^{6}-10^{10}\Ms$. Such early black holes, at redshifts z$\
Abel, Tom   +2 more
core   +5 more sources

Universal black holes [PDF]

open access: yesJournal of High Energy Physics, 2020
Abstract We prove that a generalized Schwarzschild-like ansatz can be consistently employed to construct d-dimensional static vacuum black hole solutions in any metric theory of gravity for which the Lagrangian is a scalar invariant constructed from the Riemann tensor and its covariant derivatives of arbitrary order.
Hervik, S., Ortaggio, M. (Marcello)
openaire   +7 more sources

Black holes of dimensionally continued gravity coupled to Born–Infeld electromagnetic field

open access: yesPhysics Letters B, 2018
In this paper, for dimensionally continued gravity coupled to Born–Infeld electromagnetic field, we construct topological black holes in diverse dimensions and construct dyonic black holes in general even dimensions.
Kun Meng, Da-Bao Yang
doaj   +1 more source

Magnonic Black Holes [PDF]

open access: yesPhysical Review Letters, 2017
We show that the interaction between spin-polarized current and magnetization dynamics can be used to implement black-hole and white-hole horizons for magnons - the quanta of oscillations in the magnetization direction in magnets. We consider three different systems: easy-plane ferromagnetic metals, isotropic antiferromagnetic metals, and easy-plane ...
Alvaro S. Nunez   +3 more
openaire   +6 more sources

Black holes and fourfolds [PDF]

open access: yesJournal of High Energy Physics, 2012
Abstract We establish a relation between the structure governing four- and five- dimensional black holes and multicenter solutions on the one hand and Calabi-Yau flux compactifications of M-theory and type IIB string theory on the other hand, for both supersymmetric and non-supersymmetric solutions.
Bena, Iosif   +2 more
openaire   +5 more sources

Accreting fluids onto regular black holes via Hamiltonian approach

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
We investigate the accretion of test fluids onto regular black holes such as Kehagias–Sfetsos black holes and regular black holes with Dagum distribution function. We analyze the accretion process when different test fluids are falling onto these regular
Abdul Jawad, M. Umair Shahzad
doaj   +1 more source

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