10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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12 papers · 2 filters
Geodesics in spacetimes with expanding impulsive gravitational waves
Jiri Podolsky, Roland Steinbauer
We study geodesic motion in expanding spherical impulsive gravitational waves propagating in a Minkowski background. Employing the continuous form of the metric we find and examine…
Impulsive waves in electrovac direct product spacetimes with Lambda
Marcello Ortaggio, Jiri Podolsky
A complete family of non-expanding impulsive waves in spacetimes which are the direct product of two 2-spaces of constant curvature is presented. In addition to previously investig…
A 3+1 covariant suite of Numerical Relativity Evolution Systems
C. Bona, T. Ledvinka, C. Palenzuela
A suite of three evolution systems is presented in the framework of the 3+1 formalism. The first one is of second order in space derivatives and has the same causal structure of th…
An interpretation of Robinson-Trautman type N solutions
J. B. Griffiths, J. Podolsky, P. Docherty
The Robinson-Trautman type N solutions, which describe expanding gravitational waves, are investigated for all possible values of the cosmological constant Lambda and the curvature…
The fields of uniformly accelerated charges in de Sitter spacetime
Jiri Bicak, Pavel Krtous
The scalar and electromagnetic fields of charges uniformly accelerated in de Sitter spacetime are constructed. They represent the generalization of the Born solutions describing fi…
Poincare ball embeddings of the optical geometry
M. Abramowicz, I. Bengtsson, V. Karas +1
It is shown that optical geometry of the Reissner-Nordstrom exterior metric can be embedded in a hyperbolic space all the way down to its outer horizon. The adopted embedding proce…
Notes on static cylindrical shells
Jiri Bicak, Martin Zofka
Static cylindrical shells made of various types of matter are studied as sources of the vacuum Levi-Civita metrics. Their internal physical properties are related to the two essent…
Towards gravitating discs around stationary black holes
O. Semerak
This article outlines the search for an exact general relativistic description of the exterior (vacuum) gravitational field of a rotating spheroidal black hole surrounded by a real…
Accelerating black holes in anti-de Sitter universe
J. Podolsky
A physical interpretation of the C-metric with a negative cosmological constant is suggested. Using a convenient coordinate system it is demonstrated that this class of exact s…
Exact impulsive gravitational waves in spacetimes of constant curvature
J. Podolsky
Exact solutions exist which describe impulsive gravitational waves propagating in Minkowski, de Sitter, or anti-de Sitter universes. These may be either nonexpanding or expanding.…
Exact solutions and their interpretation
Jiri Bicak
This is the account of the workshop Exact solutions and their interpretation at the 16-th International Conference on General Relativity and Gravitation held in Durban, July 15-21,…
Radiative spacetimes
Jiri Bicak
The question of existence of general, asymptotically flat radiative spacetimes and examples of explicit classes of radiative solutions of Einstein's field equations are discussed i…