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RESEARCH PRODUCT

Impact of cosmic inhomogeneities on SNe observations

Kimmo KainulainenValerio MarraJean-michel AlimiAndré Fuözfa

subject

Cosmology and Nongalactic Astrophysics (astro-ph.CO)media_common.quotation_subjectgr-qcCosmic background radiationFOS: Physical sciencesAstrophysicsGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic Astrophysics01 natural sciences114 Physical sciencesGeneral Relativity and Quantum CosmologyCosmologysymbols.namesakeObservational cosmology0103 physical sciences010306 general physicsmedia_commonPhysicsCOSMIC cancer database010308 nuclear & particles physicsCopernican principleRedshiftUniverseLocal Voidsymbolsastro-ph.COAstrophysics - Cosmology and Nongalactic Astrophysics

description

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.

yearjournalcountryeditionlanguage
2009-11-30
10.1063/1.3462598http://hdl.handle.net/10138/24238