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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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
16 September 2010
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| In: |
Physical review letters
Year: 2010, Volume: 105, Issue: 12, Pages: 121302 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.105.121302 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.105.121302
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| Author Notes: | Luca Amendola, Kimmo Kainulainen, Valerio Marra, and Miguel Quartin |
| Summary: | 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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| Item Description: | Gesehen am 13.11.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.105.121302 |