Features of the Spectra of Kerr Black Holes
Spectra and variability of accreting black holes
... mass black hole candidate discovered through its recent very bright ...characteristic features of the temporal variability – low-frequency roll- over and QPO frequency – increase drastically in frequency, ...
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New entropy formula for Kerr black holes
... Acknowledgments DG thanks Soo-Jong Rey and the organizers of the 13 th International Conference on Gravitation, Astrophysics, and Cosmology and the 15 th Korea-Italy Relativistic Astrophysics Symposium for the invitation ...
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Shadows of Kerr Black Holes with Scalar Hair
... to Kerr, their shadows are distinguishable from the latter, with the same asymptotic quantities, as illustrated by shadow ...the Kerr shadows, hopefully of use for VLBI ...from Kerr suggested in the ...
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Effective stability against superradiance of Kerr black holes with
... Rather than analysing sequences of hairy BHs at constant tem- perature, which appear to spiral along the domain of existence (cf. Fig. 1, left panel), we consider a sequence at fixed coupling M μ ; these are simply ...
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Astrophysical imaging of Kerr black holes with scalar hair
... the Kerr paradigm, one may wonder about their realization as astrophysical ...vacuum Kerr BH (with no scalar field excited) is an unstable solution of the model ...
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Non-linear Q -clouds around Kerr black holes
... (Kerr) black holes, as non-linear bound states of a test scalar ...the black hole horizon, along 1-dimensional subspaces – existence lines – of the Kerr 2-dimensional parameter ...the ...
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Force-free electrodynamics around extreme Kerr black holes
... spinning black hole and provide the power source for a variety of observed astrophysical ...spinning black hole, where the energy extraction takes ...
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Dynamical Formation of Kerr Black Holes with Synchronized Hair: An Analytic Model
... East and Pretorius have successfully evolved, using fully nonlinear numerical simulations, the superradiant instability of the Kerr black hole (BH) triggered by a massive, complex vector field. Evolutions ...
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Scalar Dyon Production In Near Extremal Kerr-Newman Black Holes
... KN black holes includes two contributions: one is the Schwinger effect in the AdS 2 space caused mainly by the electromagnetic field of black holes and the other is the Schwinger effect in the ...
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Extremal Kerr–Newman black holes with extremely short charged scalar hair
... corresponding black-hole spacetime: r field > r null ...hairy black-hole ...cloudy Kerr–Newman black-hole spacetimes – charged rotating black holes which support linearized ...
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Classical super-radiance in Kerr-Newman-anti-de Sitter black holes
... We begin, in section 2, by reviewing those aspects of the geometry of KN- AdS which are useful for our purposes. One interesting result at this stage is that there are KN-AdS black holes which possess a ...
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Radiation-reaction-induced evolution of circular orbits of particles around Kerr black holes
... @7# A. Ori, Phys. Lett. A 202, 347 ~1995!. @8# In the case of gravitational radiation reaction ~which is our chief concern here !, although it is possible to use this concept of back-reaction force, this force is gauge ...
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Spontaneously scalarized Kerr black holes in extended scalar-tensor-Gauss-Bonnet gravity
... scalarized black holes (SBHs) in extended scalar-tensor –Gauss-Bonnet ...to Kerr BHs when the scalar field ...with Kerr BHs of equal global charges is observed; the SBHs are entropically ...of ...
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Black Holes and White Rabbits: Metaphor Identification with Visual Features
... Table 2: System performance on Tsvetkov et al. test set ( TSV - TEST ) in terms of precision (P ), recall (R) and F-score (F 1) P HRASE C OS 1 for both verbs and adjectives by 17- 19%. This suggests that linguistic word ...
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Maxwell perturbations on Kerr-anti-de Sitter black holes: Quasinormal modes, superradiant instabilities, and vector clouds
... on Kerr-AdS black holes, one of which produces a new set of quasinormal modes even for Schwarzschild-AdS black ...of black hole solutions at the nonlinear level, within the ...
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On-axis scalar absorption cross section of Kerr–Newman black holes: Geodesic analysis, sinc and low-frequency approximations
... of black holes, which can also be used to test the no-hair ...by black holes presents regular oscillations around the capture cross section, which is given by σ geo = πb 2 c , where b c is the ...
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Topology of Black Holes’ Horizons
... 4- Introducing Time in the BUT Framework The account of the cosmic holographic principle is generally provided by a framework which takes for granted that the event horizon is equipped with two spatial dimensions plus ...
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Scalarized hairy black holes
... hairy black hole solutions is encountered ...hairy black hole so- ...extremal Kerr black hole solution, possessing almost the same mass and the respective hori- zon angular velocity H = ω / ...
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Infinitely coloured black holes
... consider black holes in standard Einstein four-dimensional space-times, which however capture some of the essential features of the above-mentioned two-dimensional stringy black holes, ...
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Agujeros negros de Kerr-Newman en teorias f(R)(Kerr-Newman black holes in f(R) theories)
... tipo Kerr-Newman-AdS presentan configura- ci´ on de AN para cualquier valor de la temperatura T , por lo que la estabilidad de cada AN vendr´ a dada por los valo- res que tomen la capacidad calor´ıfica C y la ...
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