The Dyer-Roeder relation in a universe with particle production
Physics Department, UFRR, Campus do Paricarãna, Boa Vista, RR., Brasil e-mail: email@example.com
2 UFF Physics Institute, Av. Litorânea s/n, Niterói, RJ., Brasil e-mail: firstname.lastname@example.org
Accepted: 23 March 2004
We have obtained analytical exact solutions of the Dyer-Roeder equation in a cosmological model where creation of particles occurs at the expense of the gravitational field. We discuss the influences of inhomogeneities in the path of a light beam on the apparent diameter of astrophysical objects and consider both redshift independent and redshift dependent distributions of the inhomogeneities.
Key words: cosmology: miscellaneous / cosmology: theory
© ESO, 2004