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IOP Publishing, Research in Astronomy and Astrophysics, 2(9), p. 151-156, 2009

DOI: 10.1088/1674-4527/9/2/004

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Constraining Ω with the fluctuation of the local Hubble flow

Journal article published in 2009 by Quan Guo, Huan-Yuan Shan ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

We present an analysis of the fluctuation of the local Hubble flow using 350 galaxies in the Local Volume (D < 5 Mpc, hereafter LV) with accurate measurements of distances, positions and radial velocities, and compare the results with the theoretical prediction of the local Hubble flow induced by density perturbations. This allows us to set a useful constraint on the local Omega parameters: OmegaM ~ 0.6 and OmegaLambda ~ 0.7, which may serve as compelling evidence for the existence of dark energy in the local Universe.