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Observational Tests for the Cosmological Principle and World Models

  • Chapter
Book cover Structure Formation in the Universe

Part of the book series: NATO Science Series C: (closed) ((ASIC,volume 565))

Abstract

We review observational tests for the homogeneity of the Universe on large scales. Redshift and peculiar velocity surveys, radio sources, the X-Ray Background, the Lyman-α forest and the Cosmic Microwave Background are used to set constraints on inhomogeneous models and in particular on fractal-like models. Assuming the Cosmological Principle and the FRW metric, we estimate cosmological parameters by joint analysis of peculiar velocities, the CMB, cluster abundance, IRAS and Supernovae. Under certain assumptions the best fit density parameter is Ω m =1−λ≈0.4. We present a new method for joint estimation by combining different data sets in a Bayesian way, and utilising ‘Hyper-Parameters’. 2001 Kluwer Academic Publishers. Printed in the Netherlands.

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Author information

Authors and Affiliations

  1. Institute of Astronomy, Madingley Road, Cambridge, CB3 OHA, UK

    Ofer Lahav

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  1. Ofer Lahav
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Editor information

Editors and Affiliations

  1. University of Cambridge, Cambridge, UK

    Robert G. Crittenden  & Neil G. Turok  & 

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© 2001 Kluwer Academic Publishers

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Lahav, O. (2001). Observational Tests for the Cosmological Principle and World Models. In: Crittenden, R.G., Turok, N.G. (eds) Structure Formation in the Universe. NATO Science Series C: (closed), vol 565. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0540-1_7

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  • DOI: https://doi.org/10.1007/978-94-010-0540-1_7

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-0155-0

  • Online ISBN: 978-94-010-0540-1

  • eBook Packages: Springer Book Archive

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