Impact of cosmic inhomogeneities on SNe observations

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Kainulainen , K & Marra , V 2010 , ' Impact of cosmic inhomogeneities on SNe observations ' , AIP Conference Proceedings , vol. 1241 , no. 1 , pp. 1043-1050 . https://doi.org/10.1063/1.3462598

Title: Impact of cosmic inhomogeneities on SNe observations
Author: Kainulainen, Kimmo; Marra, Valerio
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2010
Language: eng
Number of pages: 8
Belongs to series: AIP Conference Proceedings
ISSN: 0094-243X
URI: http://hdl.handle.net/10138/24238
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.
Subject: astro-ph.CO
gr-qc
114 Physical sciences
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