, Volume 302, Issue 1-4, pp 207-211

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

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Abstract

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.