Large-scale inhomogeneities may improve the cosmic concordance of supernovae
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 ΩM, ΩΛ, and w in the presence of inhomogeneities, approximately m...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
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16 September 2010
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Physical review letters
Year: 2010, Jahrgang: 105, Heft: 12, Pages: 121302 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.105.121302 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.105.121302
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| Verfasserangaben: | Luca Amendola, Kimmo Kainulainen, Valerio Marra, and Miguel Quartin |
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| 520 | |a 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 ΩM, ΩΛ, 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. | ||
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