87 citations · 110 across the 8 of their papers we have counts for
8 papers
WKB approximation for quasi-bound states and trapped modes
R. A. Konoplya, Z. Stuchlík, A. Zhidenko
We develop a largely automatic semi-analytic method for calculating weakly damped quasi-bound states and trapped modes supported by a local minimum of an effective potential. The r…
Quasinormal Modes and Hawking Radiation of Black Holes with Primary Scalar Hair
Roman Konoplya, Oleksandr Stashko, Zdeněk Stuchlík
Recently, a new family of asymptotically flat black-hole solutions endowed with primary scalar hair has been discovered in beyond-Horndeski gravity. We study in detail the quasinor…
Shadows of naked singularities and superspinars related to the revisited Kerr-de Sitter spacetimes
Daniel Charbulák, Zdeněk Stuchlík
We construct shadows of superspinars described by the revisited Kerr-de Sitter (rKdS) naked singularity (NS) spacetimes and compare them with those of the standard KdSNS spacetimes…
Charged black hole surrounded by a galactic halo in de Sitter universe
R. A. Konoplya, Z. Stuchlík, A. Zhidenko
Assuming a sufficiently general form for the matter distribution function of a galactic halo, we have derived solutions to the Einstein-Maxwell equations describing a charged black…
Nonoscillatory gravitational quasinormal modes of Reissner-Nordström-de Sitter spacetime
Z. Stuchlík, A. Zhidenko
We revisit quasinormal modes of Reissner-Nordström-de Sitter black holes, a classical and seemingly well-understood solution of Einstein-Maxwell theory with a positive cosmological…
Overtones behavior of higher dimensional black holes in the Einstein-Gauss-Bonnet gravity
Z. Stuchlík, A. Zhidenko
Gravitational perturbations of higher-dimensional black holes in the Einstein-Gauss-Bonnet theory, proposed by Boulware and Deser, have been extensively studied in numerous works,…
Massive fields affected by echoes: New physics vs. astrophysical environment
R. A. Konoplya, Z. Stuchlík, A. Zhidenko
Unlike the perturbations of massless fields, the asymptotic tails of massive fields exhibit oscillations and decay slowly, following a power-law envelope. In this work, considering…
Quasinormal modes and Hawking radiation of black holes in cubic gravity
R. A. Konoplya, A. F. Zinhailo, Z. Stuchlik
We consider quasinormal modes and Hawking radiation of four-dimensional asymptotically flat black holes in the most general up to-cubic-order-in-curvature dimension-independent Ein…