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The Dyer-Roeder relation in a universe with particle production

M. de Campos, J. A. Souza

astro-pharXiv:astro-ph/0309747

Abstract

We have obtained analytical exact solutions of the Dyer-Roeder equation in a cosmological model where creation of particles occurs at the expenses of the gravitational field. We discussed the influences of inhomogeneities in the path of a light beam on the apparent diameter of astrophysical objects and consider both redshift independent as redshift dependent distributions of the inhomogeneities.

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