# Radiation and Boundary Conditions in the Theory of Gravitation

@article{Trautman2016RadiationAB, title={Radiation and Boundary Conditions in the Theory of Gravitation}, author={Andrzej Trautman}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2016} }

The Sommerfeld boundary conditions, applied to an asymptotically weak gravitational field, are shown to imply that the 1/r part of the curvature tensor of a space-time, satisfying the Einstein equations, is of type null in the Petrov classification and that there is then a flux of energy carried away by the outgoing gravitational wave.

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