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Astrophysical Black Holes: A Review [PDF]

open access: yesProceedings of Multifrequency Behaviour of High Energy Cosmic Sources - XIII — PoS(MULTIF2019), 2019
In this review, I have tried to focus on the development of the field, from the first speculations to the current lines of research. According to Einstein's theory of general relativity, black holes are relatively simple objects and completely ...
Bambi, Cosimo, Cosimo Bambi
core   +4 more sources

Astrophysical black holes

open access: yes, 2016
Based on graduate school lectures in contemporary relativity and gravitational physics, this book gives a complete and unified picture of the present status of theoretical and observational properties of astrophysical black holes.
Treves, Aldo   +4 more
core   +2 more sources

Black holes at accelerators [PDF]

open access: yes, 2010
In theories with large extra dimensions and TeV-scale gravity, black holes are copiously produced in particle collisions at energies well above the Planck scale.

core   +9 more sources

Einstein-Yang-Mills black holes in anti de-Sitter space [PDF]

open access: yes, 2012
In this thesis we consider Einstein-Yang-Mills black holes in asymptotically anti-de Sitter space, in the presence of an su(N) gauge eld. For a purely magnetic gauge eld we de ne a set of charges, namely the mass and N - 1 gauge invariant magnetic ...
Shepherd, Benjamin L
core   +6 more sources

On black holes in string theory [PDF]

open access: yes, 2011
PhDThis thesis investigates black holes in string theory through string amplitudes and through gauge-gravity duality. The research presented in this thesis supports the claim that string theory is capable of a consistent quantum-mechanical description
Turton, David J.
core   +4 more sources

Constraints on the Cosmological Coupling of Black Holes from the Globular Cluster NGC 3201

open access: yesThe Astrophysical Journal Letters, 2023
Globular clusters are among the oldest stellar populations in the Milky Way; consequently, they also host some of the oldest known stellar-mass black holes, providing insight into black hole formation and evolution in the early ( z ≳ 2) universe.
Carl L. Rodriguez
doaj   +1 more source

“Black Star” or Astrophysical Black Hole? [PDF]

open access: yesAIP Conference Proceedings, 2008
Recently wide publicity has been given to a claim by T. Vachaspati that "black holes do not exist", that the objects known as black holes in astrophysics should rather be called "black stars" and they not only do not have event horizons but actually can be the source of spectacular gamma ray bursts.
K. Petrovay   +3 more
openaire   +2 more sources

Growth of a Massive Black Hole in a Dense Star Cluster Via Tidal Disruption Accretion

open access: yesThe Astrophysical Journal, 2023
Stars that are tidally disrupted by a massive black hole (MBH) may contribute significantly to the growth of the MBH, especially in dense nuclear star clusters.
Seungjae Lee, Ji-hoon Kim, Boon Kiat Oh
doaj   +1 more source

Radio Emission From a z = 10.1 Black Hole in UHZ1

open access: yesThe Astrophysical Journal, 2023
The recent discovery of a 4 × 10 ^7 M _⊙ black hole (BH) in UHZ1 at z = 10.3, just 450 Myr after the Big Bang, suggests that the seeds of the first quasars may have been direct-collapse BHs from the collapse of supermassive primordial stars at z ∼ 20 ...
Daniel J. Whalen   +2 more
doaj   +1 more source

Are astrophysical “black” holes leaky?

open access: yesInternational Journal of Modern Physics D, 2022
We continue a study by Adler and Ramazanoǧlu (AR) of “black” holes as modified by a scale invariant dark energy action. For the spherically symmetric Schwarzschild-like case, AR found that there is no event horizon; hence spacetime is not divided by the “black” hole into causally disconnected regions.
openaire   +2 more sources

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