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pro vyhledávání: '"Cvetic, M."'
This work studies mode stability of an STU black hole with four pairwise equal $\rm{U(1)}$ charges in four spacetime dimensions. We investigate bosonic perturbations for probe fields of different spins through the transformation technique devised by
Externí odkaz:
http://arxiv.org/abs/2312.04929
Autor:
Cvetic, M., Stetsko, M. M.
We study the separability of the Dirac equation for the four-dimensional STU black hole space-time. In particular, we analyze in detail the separability conditions in the pair-wise equal charge STU black hole space-time \cite{Cvetic_PRD96}. While in
Externí odkaz:
http://arxiv.org/abs/2303.12290
The mode stability of the Kerr black hole in four dimensions was demonstrated by Whiting in 1989, by separating the Teukolsky equation that describes gravitational perturbations and then transforming the radial and angular equations in such a way tha
Externí odkaz:
http://arxiv.org/abs/2207.01653
Motivated by recent studies of long-range forces beween identical black holes, we extend these considerations by investigating the forces between two non-identical black holes. We focus on classes of theories where charged black holes can have extrem
Externí odkaz:
http://arxiv.org/abs/2207.00609
To perform realistic tests of theories of gravity, we need to be able to look beyond general relativity and evaluate the consistency of alternative theories with observational data from, especially, gravitational wave detections using, for example, a
Externí odkaz:
http://arxiv.org/abs/2109.03254
We present a construction of the most general BPS black holes of STU supergravity (${\cal N}=2$ supersymmetric $D=4$ supergravity coupled to three vector super-multiplets) with arbitrary asymptotic values of the scalar fields. These solutions are obt
Externí odkaz:
http://arxiv.org/abs/2102.02826
Publikováno v:
Phys. Rev. D 102, 086007 (2020)
The extremal Reissner-Nordstr\"om black hole admits a conformal inversion symmetry, in which the metric is mapped into itself under an inversion of the radial coordinate combined with a conformal rescaling. In the rotating generalisation, Couch and T
Externí odkaz:
http://arxiv.org/abs/2008.04944
Publikováno v:
Phys. Rev. D 101, 066025 (2020)
Motivated by the study of conserved Aretakis charges for a scalar field on the horizon of an extremal black hole, we construct the metrics for certain classes of four-dimensional and five-dimensional extremal rotating black holes in Gaussian null coo
Externí odkaz:
http://arxiv.org/abs/2001.04495
Publikováno v:
Phys. Rev. Lett. 124, 231102 (2020)
We outline a proof of the stability of a massless neutral scalar field $\psi$ in the background of a wide class of four dimensional asymptotically flat rotating and ``electrically charged'' solutions of supergravity, and the low energy limit of strin
Externí odkaz:
http://arxiv.org/abs/1912.08988
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