Large-scale inhomogeneities may improve the cosmic concordance of supernovae

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Large-scale inhomogeneities may improve the cosmic concordance of supernovae
• Verf.angabe: Luca Amendola, Kimmo Kainulainen, Valerio Marra, and Miguel Quartin
• Fussnoten: Gesehen am 13.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2010
• Band/Heft Quelle: (2010) Artikel-Nummer 1002.1232, 4 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565271424

Abstract

We reanalyze the supernovae data from the Union Compilation including the weak lensing effects caused by inhomogeneities. We compute the lensing probability distribution function for each background solution described by the parameters Omega_M, Omega_L and w in the presence of inhomogeneities, approximately modeled with a single-mass population of halos. We then perform a likelihood analysis in the space of FLRW-parameters and compare our results with the standard approach. We find that the inclusion of lensing can move the best-fit model significantly towards the cosmic concordance of the flat LCDM model, improving the agreement with the constraints coming from the cosmic microwave background and baryon acoustic oscillations.