Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1997-08-11
Gen.Rel.Grav. 30 (1998) 151-157
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
5 pages, Latex
Scientific paper
Space-times admitting a 3-dimensional Lie group of conformal motions $C_3$ acting on null orbits are studied. Coordinate expressions for the metric and the conformal Killing vectors (CKV) are provided (irrespectively of the matter content) and then all possible perfect fluid solutions are found, although none of these verify the weak and dominant energy conditions over the whole space-time manifold.
Carot Jaume
Coley Alan A.
Sintes Alicia M.
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