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arXiv · 1002.0978

Cosmic age test in inhomogeneous cosmological models mimicking $Λ$CDM on the light cone

Mi-Xiang Lan·Miao Li·Xiao-Dong Li·Shuang Wang
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Abstract

The possibility of reconstructing a spherically symmetric inhomogeneous Lemaitre-Tolman-Bondi (LTB) model with $Λ$CDM observations has drawn a lot of attention. Recently, a LTB model having the same luminosity-distance and light-cone mass density as the $Λ$CDM model was reconstructed. We calculate the cosmic age at our position in this model, and get the age $t_{LTB}<11.7$Gyr in 2$σ$ confidence level from the Seven-Year WMAP observations. This result is inconsistent with some Milky Way observations.

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Mi-Xiang Lan, Miao Li, Xiao-Dong Li, Shuang Wang. 2010-07-25. Cosmic age test in inhomogeneous cosmological models mimicking $Λ$CDM on the light cone. https://doi.org/10.1103/physrevd.82.023516

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