Abstract
Kinetic equations for ultrarelativistic particles with due account of gravitational interactions with massive particles in the Robertson-Walker universe are obtained. On the basis of an exact solution of the kinetic equations thus obtained, a conclusion is made as to the high degree of the uniformity of the relict radiation on scales whih are less than 10′.
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Ignat'ev, Y.G., Popov, A.A. Kinetic equations for ultrarelativistic particles in a Robertson-Walker universe and isotropization of relict radiation by gravitational interactions. Astrophys Space Sci 163, 153–174 (1990). https://doi.org/10.1007/BF00639984
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DOI: https://doi.org/10.1007/BF00639984