Omega_m - Different Ways to Determine the Matter Density of the Universe

Details Omega_m - Different Ways to Determine the Matter Density of the Universe Omega_m - Different Ways to Determine the Matter Density of the Universe

2001-07-02

arxiv.org/abs/astro-ph/0107028v1

Astronomy and Astrophysics

Astrophysics

Invited Review to be published in the Space Sciences Series of ISSI, Vol. 15, and in Space Science Reviews, P. Jetzer, K. Pret

Scientific paper

A summary of various measurements of the mean matter density in the universe,
Omega_m, is presented. Results from very different kinds of methods using
various astronomical objects -- from supernovae to large-scale structure -- are
shown. There is a remarkable preference for Omega_m values around 0.3, but
there are also some measurements that favour a higher or a smaller value.

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