| Issue |
EAS Publications Series
Volume 30, 2008
Spanish Relativity Meeting - Encuentros Relativistas Españoles , ERE2007: Relativistic Astrophysics and Cosmology
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|---|---|---|
| Page(s) | 349 - 352 | |
| DOI | https://doi.org/10.1051/eas:0830059 | |
| Published online | 30 September 2008 | |
A. Oscoz, E. Mediavilla and M. Serra-Ricart (eds)
EAS Publications Series, 30 (2008) 349-352
Light propagation through large-scale inhomogeneities in the Universe and its impact on cosmological observations
Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw, Poland
Corresponding author: bolejko@camk.edu.pl
This paper analyses cosmological observations within inhomogeneous and exact solutions of the Einstein equations. In some way the analyses presented here can be freed from assumptions such as small amplitude of the density contrast. The supernova observations are analysed using the Lemaître–Tolman model and the CMB observations are analysed using the quasispherical Szekeres model. The results show that it is possible to fit the supernova data without the cosmological constant. However if inhomogeneities of sizes and amplitudes as observed in the local Universe are considered, their impact on cosmological observations is small.
© EAS, EDP Sciences, 2008