Inhomogeneous space-times admitting isotropic radiation: Vorticity-free case
- 15 July 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 46 (2) , 578-584
- https://doi.org/10.1103/physrevd.46.578
Abstract
The energy-momentum tensor of space-times admitting a vorticity-free and a shear-free timelike congruence is obtained. This result is used to write Einstein equations in a convenient way in order to get inhomogeneous space-times admitting an isotropic distribution of photons satisfying the Liouville equation. Two special cases with anisotropic pressures in the energy flow direction are considered.Keywords
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