title: Large-scale inhomogeneities may improve the cosmic concordance of supernovae.
abstract: We reanalyze the supernova 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 Ω(M), Ω(Λ), and w in the presence of inhomogeneities, approximately modeled with a single-mass population of halos. We then perform a likelihood analysis in the parameter space of Friedmann-Lemaître-Robertson-Walker models 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 Lambda-Cold Dark Matter model, improving the agreement with the constraints coming from the cosmic microwave background and baryon acoustic oscillations.
authors.affiliation: Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany.
authors.forename: Luca
authors.initials: L
authors.lastname: Amendola
authors.forename: Kimmo
authors.initials: K
authors.lastname: Kainulainen
authors.forename: Valerio
authors.initials: V
authors.lastname: Marra
authors.forename: Miguel
authors.initials: M
authors.lastname: Quartin