ar X iv : g r - qc / 0 30 10 83 v 2 3 F eb 2 00 4 Spin - 1 gravitational waves and their natural sources
نویسنده
چکیده
Non-vacuum exact gravitational waves invariant for a non Abelian two-dimensional Lie algebra generated by two Killing fields whose commutator is of light type, are described. The polarization of these waves, already known from previous works, is related to their natural sources consisting of cosmic strings and γ-ray bursts. Non vacuum exact gravitational waves admitting only one Killing field of light type are also discussed.
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تاریخ انتشار 2008