Gravitational radiation in Robertson-Walker backgrounds

Details Gravitational radiation in Robertson-Walker backgrounds Gravitational radiation in Robertson-Walker backgrounds

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gregr..15..241n&link_type=abstract

General Relativity and Gravitation, vol. 15, Mar. 1983, p. 241-254. NSF-supported research.

Physics

8

Electromagnetic Fields, Field Theory (Physics), Gravitational Waves, Perturbation Theory, Space-Time Functions, Tensor Analysis, Electric Fields, Gauge Invariance, Harmonics, Magnetic Fields, Stress Tensors, Wave Equations

Scientific paper

The radiative perturbations studied by Chang and Janis in the Newman-Penrose formalism are shown to be a proper subset of those treated in the approach pioneered by Lifshitz. A scheme is developed for treating the full set of purely radiative perturbations in Robertson-Walker backgrounds within the Newman-Penrose formalism. A description of the radiation is given in terms of the electric and magnetic parts of the Weyl tensor, and the governing wave equations are found.

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