Results 11 to 20 of about 2,322,909 (253)
Bridging Scales in Black Hole Accretion and Feedback: Magnetized Bondi Accretion in 3D GRMHD
The Astrophysical Journal Letters, 2023 Fueling and feedback couple supermassive black holes (SMBHs) to their host galaxies across many orders of magnitude in spatial and temporal scales, making this problem notoriously challenging to simulate. We use a multi-zone computational method based on
Hyerin Cho +6 more
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Galaxies, 2023 In the past few years, the Event Horizon Telescope (EHT) has provided the first-ever event horizon-scale images of the supermassive black holes (BHs) M87* and Sagittarius A* (Sgr A*).
Koushik Chatterjee +20 more
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The effective action of superrotation modes
Journal of High Energy Physics, 2021 Starting from an analysis of four-dimensional asymptotically flat gravity in first order formulation, we show that superrotation reparametrization modes are governed by an Alekseev-Shatashvili action on the celestial sphere.
Kévin Nguyen, Jakob Salzer
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Extreme Tidal Stripping May Explain the Overmassive Black Hole in Leo I: A Proof of Concept
The Astrophysical Journal Letters, 2023 A recent study found dynamical evidence of a supermassive black hole of ∼3 × 10 ^6 M _⊙ at the center of Leo I, the most distant dwarf spheroidal galaxy of the Milky Way. This black hole, comparable in mass to the Milky Way’s Sgr A*, places the system >2
Fabio Pacucci, Yueying Ni, Abraham Loeb
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Galaxies, 2022 Tidal disruption events (TDEs) around supermassive black holes (SMBHs) are a potential laboratory to study super-Eddington accretion disks and sometimes result in powerful jets or outflows which may shine in the radio and sub-millimeter bands.
Brandon Curd +3 more
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Numerical Simulations of Black-Hole Spacetimes [PDF]
, 2012 This thesis covers various aspects of the numerical simulation of black-hole spacetimes according to Einstein's general theory of relativity, using the Spectral Einstein Code developed by the Caltech-Cornell-CITA collaboration.
Chu, Tony
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On black holes in string theory [PDF]
, 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, Turton, David J.
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Einstein-Yang-Mills black holes in anti de-Sitter space [PDF]
, 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
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Black hole attractors and the entropy function in four- and five-dimensional N=2 supergravity [PDF]
, 2007 Extremal black holes in theories of gravity coupled to abelian gauge fields and neutral scalars, such as those arising in the low-energy description of compactifications of string theory on Calabi-Yau manifolds, exhibit the attractor phenomenon: on the ...
Perz, Jan
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Astronomy & AstrophysicsDirect observation of the orbital motion of a sub-parsec supermassive black hole binary (SMBHB) would provide the first conclusive electromagnetic proof of such systems existing.
Hudson B. +4 more
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