Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-07-04
Class.Quant.Grav. 20 (2003) 4683-4694
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
20 pages, latex file, no figures, two references added, accepted for publication in Class. Quantum Gravity
Scientific paper
10.1088/0264-9381/20/21/008
We present a continuity equation for the gravitational energy-momentum, which is obtained in the framework of the teleparallel equivalent of general relativity. From this equation it follows a general definition for the gravitational energy-momentum flux. This definition is investigated in the context of plane waves and of cylindrical Einstein-Rosen waves. We obtain the well known value for the energy flux of plane gravitational waves, and conclude that the latter exhibit features similar to plane electromagnetic waves.
Castello-Branco K. H.
Faria F. F.
Maluf Jos W.
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