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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8 papers · 2 filters
General Kundt spacetimes in higher dimensions
Jiri Podolsky, Martin Zofka
We investigate a general metric of the Kundt class of spacetimes in higher dimensions. Geometrically, it admits a non-twisting, non-shearing and non-expanding geodesic null congrue…
Apparent horizons in D-dimensional Robinson-Trautman spacetime
Otakar Svitek
We derive the higher dimensional generalization of Penrose-Tod equation describing apparent horizons in Robinson-Trautman spacetimes. New results concerning the existence and uniqu…
Parallel-propagated frame along null geodesics in higher-dimensional black hole spacetimes
David Kubiznak, Valeri P. Frolov, Pavel Krtous +1
In [arXiv:0803.3259] the equations describing the parallel transport of orthonormal frames along timelike (spacelike) geodesics in a spacetime admitting a non-degenerate principal…
Inertial frame rotation induced by rotating gravitational waves
Donald Lynden-Bell, Jiri Bicak, Joseph Katz
We calculate the rotation of the inertial frames within an almost flat cylindrical region surrounded by a pulse of non-axially-symmetric gravitational waves that rotate about the a…
Relativistic Closed-Form Hamiltonian for Many-Body Gravitating Systems in the Post-Minkowskian Approximation
Tomas Ledvinka, Gerhard Schaefer, Jiri Bicak
The Hamiltonian for a system of relativistic bodies interacting by their gravitational field is found in the post-Minkowskian approximation, including all terms linear in the gravi…
Photon rockets in (anti-)de Sitter universe
Jiri Podolsky
A class of exact solutions of Einstein's equations is presented which describes accelerating photon rockets in de Sitter and anti-de Sitter universe. These are particular members o…
Cosmological perturbation theory, instantaneous gauges and local inertial frames
Jiri Bicak, Joseph Katz, Donald Lynden-Bell
Linear perturbations of Friedmann-Robertson-Walker universes with any curvature and cosmological constant are studied in a general gauge without decomposition into harmonics. Desir…
Helical Symmetry in Linear Systems
Jiri Bicak, Bernd G. Schmidt
We investigate properties of solutions of the scalar wave equation and Maxwell's equations on Minkowski space with helical symmetry. Existence of local and global solutions with th…