Abstract
A differential equation representing radiation solutions of the general relativistic Weyl equation is derived. Their optical properties and the group of motion of the corresponding energy-momentum tensor are studied. If there exists neutrino radiation the Riemann space must be algebraically special and the propagation of the neutrinos occurs only along one of the principal null directions. Gravitational- and neutrinopp-waves taken together, represent an exact solution of the Weyl-Einstein system of field equations.
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Audretsch, J., Graf, W. Neutrino radiation in gravitational fields. Commun.Math. Phys. 19, 315–326 (1970). https://doi.org/10.1007/BF01646638
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DOI: https://doi.org/10.1007/BF01646638