49 citations · 204 across the 10 of their papers we have counts for
10 papers
Dragging of inertial frames by matter and waves
Jiří Bičák, Tomáš Ledvinka
In this paper, we review and analyze four specific general-relativistic problems in which gravitomagnetism plays an important role: the dragging of magnetic fields around rotating…
Disk sources of the Kerr and Tomimatsu-Sato spacetimes: construction and physical properties
Tomáš Ledvinka, Jiří Bičák
We construct the disk sources matched to the exact vacuum Kerr and to the two classes of Tomimatsu-Sato spacetimes. We analyze two models of the matter forming these disks. At each…
Energy-momentum tensors in linearized Einstein's theory and massive gravity: The question of uniqueness
Jiří Bičák, Josef Schmidt
The question of the uniqueness of energy-momentum tensors in the linearized general relativity and in the linear massive gravity is analyzed without using variational techniques. W…
Extremal Black Holes in Strong Magnetic Fields: Near-Horizon Geometries and Meissner Effect
Filip Hejda, Jiří Bičák
For extremal black holes, one can construct simpler, limiting spacetimes that describe the geometry near degenerate horizons. Since these spacetimes are known to have enhanced symm…
Near-horizon description of extremal magnetised stationary black holes and Meissner effect
Jiří Bičák, Filip Hejda
After a brief summary of the basic properties of stationary spacetimes representing rotating, charged black holes in strong axisymmetric magnetic fields, we concentrate on extremal…
On asymptotically flat solutions of Einstein's equations periodic in time II. Spacetimes with scalar-field sources
Jiří Bičák, Martin Scholtz, Paul Tod
We extend the work in our earlier article [4] to show that time-periodic, asymptotically-flat solutions of the Einstein equations analytic at scri, whose source is one of a range o…
On asymptotically flat solutions of Einstein's equations periodic in time I. Vacuum and electrovacuum solutions
Jiri Bicak, Martin Scholtz, Paul Tod
By an argument similar to that of Gibbons and Stewart, but in a different coordinate system and less restrictive gauge, we show that any weakly-asymptotically-simple, analytic vacu…
Static fluid cylinders and their fields: global solutions
J. Bicak, T. Ledvinka, B. G. Schmidt +1
The global properties of static perfect-fluid cylinders and their external Levi-Civita fields are studied both analytically and numerically. The existence and uniqueness of global…
Global structure of Robinson-Trautman radiative space-times with cosmological constant
J. Bicak, J. Podolsky
Robinson-Trautman radiative space-times of Petrov type II with a non-vanishing cosmological constant Lambda and mass parameter m>0 are studied using analytical methods. They are sh…
Curvature invariants in type N spacetimes
J. Bicak, V. Pravda
Scalar curvature invariants are studied in type N solutions of vacuum Einstein's equations with in general non-vanishing cosmological constant Lambda. Zero-order invariants which i…