Estimation of cosmological parameters from peculiar velocities of flat EDGE-ON galaxies

Details Estimation of cosmological parameters from peculiar velocities of flat EDGE-ON galaxies Estimation of cosmological parameters from peculiar velocities of flat EDGE-ON galaxies

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.302..207p&link_type=abstract

Astrophysics and Space Science, Volume 302, Issue 1-4, pp. 207-211

Mathematics

Logic

5

Cosmological Parameters, Galaxies, Peculiar Velocities

Scientific paper

We estimate the values of the cosmological parameters using the data about peculiar velocities of 1493 flat edge-on spirals from the RFGC catalogue. The obtained values Ω m = 0.21- 0.09 + 0.22, σ8 = 1.07- 0.24 + 0.28 differ from the WMAP values by approximately 2 3σ, but well agree with modern constraints on these parameters. Due to a strong correlation between these quantities the shape of the 1σ, 2σ and 3σ-boundaries are rather narrow. This gives us the opportunity to use this estimation to verify the corresponding values, obtained by different methods.

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