S
Stoytcho S. Yazadjiev
Researcher at Sofia University
Publications - 207
Citations - 5926
Stoytcho S. Yazadjiev is an academic researcher from Sofia University. The author has contributed to research in topics: General relativity & Black hole. The author has an hindex of 40, co-authored 193 publications receiving 4580 citations. Previous affiliations of Stoytcho S. Yazadjiev include University of Tübingen & Bulgarian Academy of Sciences.
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Journal ArticleDOI
New Gauss-Bonnet Black Holes with Curvature-Induced Scalarization in Extended Scalar-Tensor Theories
Daniela D. Doneva,Daniela D. Doneva,Stoytcho S. Yazadjiev,Stoytcho S. Yazadjiev,Stoytcho S. Yazadjiev +4 more
TL;DR: It is shown that in the mentioned class of ESTGB theories there exist new black-hole solutions that are formed by spontaneous scalarization of the Schwarzschild black holes in the extreme curvature regime.
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Uniqueness Theorem for 5-Dimensional Black Holes with Two Axial Killing Fields
TL;DR: In this article, it was shown that two stationary, asymptotically flat vacuum black holes in 5 dimensions with two commuting axial symmetries are identical if and only if their masses, angular momenta, and their "interval structures" coincide.
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Shadow of a rotating traversable wormhole
TL;DR: In this article, the authors explore the shadow of rotating traversable wormholes within classical general relativity and compare the results with the case of the Kerr black hole, showing that the shadows for small angular momenta are nearly identical; however, with the increasing of the angular momentum, they start to deviate considerably.
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Connection between black-hole quasinormal modes and lensing in the strong deflection limit.
TL;DR: The purpose of the current Letter is to give some relations between gravitational lensing in the strong-deflection limit and the frequencies of the quasinormal modes of spherically symmetric, asymptotically flat black holes.
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Radial perturbations of the scalarized Einstein-Gauss-Bonnet black holes
Jose Luis Blázquez-Salcedo,Daniela D. Doneva,Daniela D. Doneva,Jutta Kunz,Stoytcho S. Yazadjiev,Stoytcho S. Yazadjiev,Stoytcho S. Yazadjiev +6 more
TL;DR: In this article, the axial perturbations of spontaneously scalarized black holes in the Gauss-Bonnet model were studied and the spectrum of the quasinormal modes by time evolution was determined by solving the associated time-independent eigenvalue problem.