SNe observations in a meatball universe with a local void

Abstract

We study the impact of cosmic inhomogeneities on the interpretation of observations. We build an inhomogeneous universe model without dark energy 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.

4 pages, 4 figures; replaced to match the version accepted for publication in Phys. Rev. D

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Cited by in corpus (23)

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• Interpretation of the Hubble diagram in a nonhomogeneous universe
• Distinguishing Between Void Models and Dark Energy with Cosmic Parallax and Redshift Drift
• A new stochastic approach to cumulative weak lensing
• Reconciling the local void with the CMB
• Accurate Modeling of Weak Lensing with the sGL Method
• Can all cosmological observations be accurately interpreted with a unique geometry?
• Observational constraints on the LLTB model
• Dark energy: investigation and modeling
• Large-scale inhomogeneities may improve the cosmic concordance of supernovae
• Exact spherically-symmetric inhomogeneous model with n perfect fluids
• Do the observational data favor a local void?
• The effect of inhomogeneities on the distance to the last scattering surface and the accuracy of the CMB analysis
• Some clarifications about Lemaître-Tolman models of the Universe used to deal with the dark energy problem
• Inhomogeneity-induced variance of cosmological parameters
• A 4% measurement of $H_0$ using the cumulative distribution of strong-lensing time delays in doubly-imaged quasars
• CMB seen through random Swiss Cheese
• An alternative approach to modelling a cosmic void and its effect on the cosmic microwave background
• Exploiting flux ratio anomalies to probe warm dark matter in future large scale surveys
• Dynamics of a spherical object of uniform density in an expanding universe