Fourier spectral‐timing techniques for the study of accreting black holes
Sign Up to like & getrecommendations! Published in 2022 at "Astronomische Nachrichten"
DOI: 10.1002/asna.20230002
Abstract: The X-ray signal from active galactic nuclei and black hole X-ray binaries is highly variable on a range of timescales. This variability can be exploited to map the region of interest close to the black… read more here.
Keywords: black hole; fourier spectral; spectral timing; timing techniques ... See more keywords
Black hole holography and mean field evolution
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DOI: 10.1007/jhep01(2018)049
Abstract: A bstractHolographic theories representing black holes are expected to exhibit quantum chaos. We argue if the laws of quantum mechanics are expected to hold for observers inside such black holes, then such holographic theories must… read more here.
Keywords: black hole; mean field; black holes; hole holography ... See more keywords
Charged scalar-tensor solitons and black holes with (approximate) Anti-de Sitter asymptotics
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DOI: 10.1007/jhep01(2019)142
Abstract: A bstractWe discuss charged and static solutions in a shift-symmetric scalar-tensor gravity model including a negative cosmological constant. The solutions are only approximately Anti-de Sitter (AdS) asymptotically. While spherically symmetric black holes with scalar-tensor hair… read more here.
Keywords: black holes; scalar tensor; anti sitter; tensor solitons ... See more keywords
Quasi-normal modes and microscopic description of 2D black holes
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DOI: 10.1007/jhep01(2022)087
Abstract: We investigate the possibility of using quasi-normal modes (QNMs) to probe the microscopic structure of two-dimensional (2D) anti-de Sitter (AdS 2 ) dilatonic black holes. We first extend previous results on the QNMs spectrum, found… read more here.
Keywords: quasi normal; black holes; normal modes; microscopic description ... See more keywords
Supersymmetric AdS6 black holes from matter coupled F(4) gauged supergravity
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DOI: 10.1007/jhep02(2019)108
Abstract: A bstractIn matter coupled F(4) gauged supergravity in six dimensions, we study supersymmetric AdS6 black holes with various horizon geometries. We find new AdS2×Σg1×Σg2$$ Ad{S}_2\times {\varSigma}_{{\mathfrak{g}}_1}\times {\varSigma}_{{\mathfrak{g}}_2} $$ horizons with g$$ \mathfrak{g} $$1> 1 and… read more here.
Keywords: matter coupled; ads6 black; black holes; gauged supergravity ... See more keywords
Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2019)111
Abstract: A bstractWe consider the O(3) non-linear sigma-model, composed of three real scalar fields with a standard kinetic term and with a symmetry breaking potential in four space-time dimensions. We show that this simple, geometrically motivated… read more here.
Keywords: holes synchronised; black holes; model; sigma model ... See more keywords
Beyond the near-horizon limit: stringy corrections to heterotic black holes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2019)192
Abstract: A bstractWe study the first-order in α′ corrections to 4-charge black holes (with the Reissner-Nordström black hole as a particular example) beyond the near-horizon limit in the Heterotic Superstring effective action framework. The higher-curvature terms… read more here.
Keywords: limit stringy; horizon limit; black holes; near horizon ... See more keywords
Thermodynamics of two black holes
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DOI: 10.1007/jhep02(2020)164
Abstract: We study a system of two charged non-rotating black holes separated by a strut. Using the exact solution of the Einstein-Maxwell equations, which describes this system, we construct a consistent form of the first law… read more here.
Keywords: thermodynamics two; black holes; two black; thermodynamics ... See more keywords
Compactified AdS black holes, Chamblin-Reall background, and their dual non-conformal relativistic fluids
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DOI: 10.1007/jhep02(2022)149
Abstract: Abstract The Chamblin-Reall background is a static solution of Einstein gravity coupled with a background scalar field and a dynamical domain wall, with the potential of the scalar field being of Liouville type. It can… read more here.
Keywords: chamblin reall; black holes; background; compactified ads ... See more keywords
Holographic complexity of quantum black holes
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DOI: 10.1007/jhep02(2022)204
Abstract: We analyze different holographic complexity proposals for black holes that include corrections from bulk quantum fields. The specific setup is the quantum BTZ black hole, which encompasses in an exact manner the effects of conformal… read more here.
Keywords: complexity quantum; black holes; complexity; quantum fields ... See more keywords
Rotating hairy black holes in AdS5 × S5
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DOI: 10.1007/jhep03(2019)110
Abstract: A bstractWe present a numerical study of fully non-linear, rotating and charged hairy black hole solutions in five-dimensional anti-de Sitter space, which originate from a consistent truncation of N=8$$ \mathcal{N}=8 $$ supergravity, and can be… read more here.
Keywords: black hole; hairy black; black holes; rotating hairy ... See more keywords