320 citations · 6.9k across the 163 of their papers we have counts for
8 papers · 1 filter
Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes
P. Bakala, P. Cermak, S. Hledik +2
We have developed a realistic, fully general relativistic computer code to simulate optical projection in a strong, spherically symmetric gravitational field. The standard theoreti…
On non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti)de Sitter black holes: acomment to the recently published results
P. Slany, Z. Stuchlik
Critical discussion of the recently published results [Muller, A. and Aschenbach, B. 2007 Class. Quantum Grav. 24, p. 2637; arXiv:0704.3963] on the non-monotonic orbital velocity p…
LNRF-velocity hump-induced oscillations of a Keplerian disc orbiting near-extreme Kerr black hole: A possible explanation of high-frequency QPOs in GRS 1915+105
Z. Stuchlik, P. Slany, G. Torok
At least four high-frequency quasiperiodic oscillations (QPOs) at frequencies 41Hz, 67Hz, 113Hz, and 167Hz were reported in a binary system GRS 1915+105 hosting near-extreme Kerr b…
On a multi-resonant origin of high frequency quasiperiodic oscillations in the neutron-star X-ray binary 4U 1636-53
Zdenek Stuchlik, Gabriel Torok, Pavel Bakala
The results we presented were biased because of the typing error in the code transcription of the equation (A.12). We will replace by the corrected version soon. The brief of the c…
Dynamical stability of fluid spheres in spacetimes with a nonzero cosmological constant
Stanislav Hledik, Zdenek Stuchlik, Kristina Mrazova
The Sturm-Liouville eigenvalue equation for eigenmodes of the radial oscillations is determined for spherically symmetric perfect fluid configurations in spacetimes with a nonzero…
Trapping of neutrinos in extremely compact stars
Zdenek Stuchlik, Martin Urbanec, Gabriel Torok +2
Trapping of neutrinos in extremely compact stars containing trapped null geodesics is studied. We calculated the ratio of produced to trapped neutrinos in the simplest model of uni…
Visualizing spacetimes via embedding diagrams
Stanislav Hledik, Zdenek Stuchlik, Alois Cipko
It is hard to imagine curved spacetimes of General Relativity. A simple but powerful way how to achieve this is visualizing them via embedding diagrams of both ordinary geometry an…
Optical reference geometry and inertial forces in Kerr-de Sitter spacetimes
Jiri Kovar, Zdenek Stuchlik
Optical reference geometry and related concept of inertial forces are investigated in Kerr-de Sitter spacetimes. Properties of the inertial forces are summarized and their typical…