64 citations · 114 across the 10 of their papers we have counts for
10 papers
Null hypersurfaces in general relativity: Intrinsic symmetries and differential invariants
G. Dautcourt
This paper investigates intrinsic Killing symmetries of null hypersurfaces within the framework of general relativity. To this end we consider as de…
Vacuum gravitational fields with a null Killing vector
G. Dautcourt
Vacuum gravitational fields admitting a light-like Killing field were systematically studied starting around 1960. Besides the already known plane waves, a second class of gravitat…
The lightcone of Gödel-like spacetimes
G. Dautcourt
A study of the lightcone of the Gödel universe is extended to the so-called Gödel-like spacetimes. This family of highly symmetric 4-D Lorentzian spaces is defined by metrics of th…
Revisiting the Light Cone of the Goedel Universe
G. Dautcourt, M. Abdel-Megied
The structure of a light cone in the Goedel universe is studied. We derive the intrinsic cone metric, calculate the rotation coefficients of the ray congruence forming the cone, de…
Classical back reaction of low-frequency cosmic gravitational radiation
G. Dautcourt
We study in a Brill-Hartle type of approximation the back reaction of a superposition of linear gravitational waves on the mean gravitational field up to second order in the wave a…
Detecting large-scale deviations from a FRW geometry with future CMB observations
G. Dautcourt
We discuss the question to what degree the geometrical structure and the matter content of the universe at scales exceeding the present Hubble horizon is constrained by cosmologica…