Impact of cosmic inhomogeneities on SNe observations
arXiv:0911.5584 · doi:10.1063/1.3462598
Abstract
We study the impact of cosmic inhomogeneities on the interpretation of SNe observations. We build an inhomogeneous universe model that can confront supernova data and yet is reasonably well compatible with the Copernican Principle. Our model combines a relatively small local void, that gives apparent acceleration at low redshifts, with a meatball model that gives sizeable lensing (dimming) at high redshifts. Together these two elements, which focus on different effects of voids on the data, allow the model to mimic the concordance model.
8 pages, 6 figures; to be published in the AIP proceedings of the 'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3, 2009