31 citations · 69 across the 3 of their papers we have counts for
5 papers · 1 filter
Ultrarelativistic boost of the black ring
Marcello Ortaggio, Pavel Krtous, Jiri Podolsky
We investigate the ultrarelativistic boost of the five-dimensional Emparan-Reall non-rotating black ring. Following the classical method of Aichelburg and Sexl, we determine the gr…
Ultrarelativistic black hole in an external electromagnetic field and gravitational waves in the Melvin universe
Marcello Ortaggio
We investigate the ultrarelativistic boost of a Schwarzschild black hole immersed in an external electromagnetic field, described by an exact solution of the Einstein-Maxwell equat…
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…
Impulsive waves in the Nariai universe
Marcello Ortaggio
A new class of exact solutions is presented which describes impulsive waves propagating in the Nariai universe. It is constructed using a six-dimensional embedding formalism adapte…
Symmetries and geodesics in (anti-)de Sitter spacetimes with nonexpanding impulsive waves
J. Podolsky, M. Ortaggio
We consider a class of exact solutions which represent nonexpanding impulsive waves in backgrounds with nonzero cosmological constant. Using a convenient 5-dimensional formalism it…