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 admittingonly one Killing field of light type are also discussed.
Spin-1 Gravitational waves and their natural sources
VILASI, Gaetano
2004-01-01
Abstract
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 admittingonly one Killing field of light type are also discussed.File in questo prodotto:
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