Estimation of cosmological parameters from peculiar velocities of flat EDGE-ON galaxies
- First Online:
- Cite this article as:
- Parnovsky, S.L., Sharov, P.Y. & Gaydamaka, O.Z. Astrophys Space Sci (2006) 302: 207. doi:10.1007/s10509-005-9030-7
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 Ωm = 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.
Keywordscosmological parameters galaxies peculiar velocities
Unable to display preview. Download preview PDF.