Pure and gravitational radiation
arXiv:gr-qc/9711001 · doi:10.1088/0264-9381/15/1/016
Abstract
The well-known treatment of asymptotically flat vacuum fields is adapted to pure radiation fields. In this approach we find a natural normalization of the radiation null vector. The energy balance at null infinity shows that the mass loss results from a linear superposition of the pure and the gravitational radiation parts. By transformation to Bondi-Sachs coordinates the Kinnersley photon rocket is found to be the only axisymmetric Robinson-Trautman pure radiation solution without gravitational radiation.
8 pages, LaTeX, 1 figure; to be published in Class. Quant. Grav