10 citations · 46 across the 14 of their papers we have counts for
15 papers
Reconstruction of the Weyl-Lewis-Papapetrou metric for stationary and axially symmetric gravitational perturbations of a Kerr black hole
David Kofroň, Petr Kotlařík
The study of black hole perturbations typically follows two main approaches: the direct perturbation of the metric, or the perturbation within the Newman-Penrose (NP) or Geroch-Hel…
Exact Bachian singularity in quadratic gravity
Simon Knoska, David Kofron, Robert Svarc
For specifically coupled values of the quadratic gravity parameters, we present a fully explicit static spherically symmetric solution. It contains the central singularity surround…
Linear perturbations of Kerr black hole in quadratic gravity
Simon Knoska, David Kofron, Robert Svarc
Employing the Newman-Penrose formalism and following the classic Teukolsky-like approach, we linearise the field equations of quadratic gravity on the Kerr background and combine t…
Initial data for a deformed isolated horizon
Aleš Flandera, David Kofroň, Tomáš Ledvinka
Within the isolated horizon formalism, we investigate a static axisymmetric space-time of a black hole influenced by matter in its neighborhood. To illustrate the role of ingredien…
Kerr black hole in the formalism of isolated horizons
David Kofroň
We revise the work of Scholtz, Flandera and Gürlebeck [Kerr-Newman black hole in the formalism of isolated horizons, Phys. Rev. D 96, 064024 (2017)]. We cast the Kerr metric explic…
An interpretation of spacetimes with expanding impulsive gravitational waves generated by snapped cosmic strings
David Kofron, Michal Karamazov, Robert Svarc
The geometric properties of spacetimes representing expanding impulsive gravitational waves, propagating on a flat background and generated by snapped cosmic strings, are studied.…