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On space-times admitting shear-free, irrotational, geodesic null congruences

A. M. Sintes·A. A. Coley·D. J. McManus
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Abstract

Space-times admitting a shear-free, irrotational, geodesic null congruence are studied. Attention is focused on those space-times in which the gravitational field is a combination of a perfect fluid and null radiation.

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A. M. Sintes, A. A. Coley, D. J. McManus. 2000-05-16. On space-times admitting shear-free, irrotational, geodesic null congruences. https://arxiv.org/abs/gr-qc/0005064

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