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Ferrando Bargues, Joan J.; Morales Lladosa, Juan Antonio; Portilla Moll, Miquel | |||
Aquest document és un/a article, creat/da en: 1992 | |||
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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. | |||
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