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We consider space-time models with pure radiation, which admit integration ofthe eikonal equation by the method of separation of variables. For all types ofthese models, the equations of the energy-momentum conservation law wereintegrated. The resulting form of metric, energy density and wave vectors ofradiation as functions of metric for all types of spaces under consideration ispresented. The solutions obtained can be used for any metric theories ofgravitation.

Pure radiation in space-time models that admit integration of the eikonal equation by the separation of variables method