1.6k citations · 9.4k across the 106 of their papers we have counts for
103 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…
Cesàro convergence of the high-order WKB method and its applications to black-hole overtones and long-lived modes
Roman A. Konoplya, Jerzy Matyjasek, Alexander Zhidenko
We develop a fully automatic Mathematica implementation of the black-hole WKB method at very high orders based on the Bender-Wu algorithm, which in principle is limited only by mem…
An efficient higher-order WKB code for quasinormal modes and greybody factors
Roman A. Konoplya, Jerzy Matyjasek, Alexander Zhidenko
The higher-order WKB Mathematica code for computing quasinormal modes, whose accuracy was significantly enhanced through extensions to higher orders and, in particular, through the…
Dark matter halo as a source of regular black-hole geometries
R. A. Konoplya, A. Zhidenko
We construct exact black hole solutions free of curvature singularities, sourced by dark matter halos described by galactic density profiles. Regularity of the geometry is ensured…
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…
Primary hairs may create echoes
R. A. Konoplya, A. Zhidenko
In most scenarios studied so far, the appearance of echoes in the ringdown signal requires modifications external to the black hole itself, such as the presence of matter in the ne…