| Issue |
A&A
Volume 422, Number 2, August I 2004
|
|
|---|---|---|
| Page(s) | 401 - 405 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20040187 | |
| Published online | 09 July 2004 | |
The Dyer-Roeder relation in a universe with particle production
1
Physics Department, UFRR, Campus do Paricarãna, Boa Vista, RR., Brasil e-mail: campos@dfis.ufrr.br
2
UFF Physics Institute, Av. Litorânea s/n, Niterói, RJ., Brasil e-mail: joseuff@bol.com.br
Received:
16
September
2002
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
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