The Age of the Universe from Joint Analysis of Cosmological Probes

Details The Age of the Universe from Joint Analysis of Cosmological Probes The Age of the Universe from Joint Analysis of Cosmological Probes

2001-05-20

arxiv.org/abs/astro-ph/0105352v1

Astronomy and Astrophysics

Astrophysics

Invited talk at "Asrtrophysical Ages and Time Scales", Hawaii, 2001, APS Conference Series, Eds. T. von Hippel, M. Manset, C.

Scientific paper

Analyses of various cosmological probes, including the latest Cosmic Microwave Background anisotropies, the 2dF Galaxy Redshift Survey and Cepheid-calibrated distance indicators suggest that the age of expansion is $13 \pm 3$ Gyr. We discuss some statistical aspects of this estimation, and we also present results for joint analysis of the latest CMB and Cepheid data by utilizing `Hyper-Parameters'. The deduced age of expansion might be uncomfortably close to the age of the oldest Globular Clusters, in particular if they formed relatively recently.

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