Asymptotic twistor Theory and the Kerr Theorem
arXiv:gr-qc/0512079 · doi:10.1088/0264-9381/23/10/009
Abstract
We first review asymptotic twistor theory with its real subspace of null asymptotic twistors. This is followed by a description of an asymptotic version of the Kerr theorem that produces regular asymptotically shear free null geodesic congruences in arbitrary asymptotically flat Einstein or Einstein-Maxwell spacetimes.
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