The 2dF Galaxy Redshift Survey: Cosmological Parameters and Galaxy Biasing

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dc.creatorLahav, Ofer
dc.creatorteam, the 2dFGRS
dc.date2002-05-22
dc.date.accessioned2026-07-25T18:38:53Z
dc.descriptionThe 2dF Galaxy Redshift Survey (2dFGRS) has already measured over 220,000 redshifts of nearby (z ~0.1) galaxies. It allows us to estimate fundamental cosmological parameters and to subdivide the survey into subsets according to the galaxy intrinsic properties. The large-scale structure analysis of the survey has already yielded several significant results: (i) the shape of the power spectrum of fluctuations is consistent with the Lambda - Cold Dark Matter concordance model; (ii) from joint analysis of the 2dFGRS data with the Cosmic Microwave Background anisotropies the linear-theory rms mass fluctuations is sigma_8m ~ 0.73, lower than the COBE-alone normalization and previous estimates from cluster abundance and cosmic shear; (iii) The biasing parameter of bright galaxies on scales > 10 Mpc/h is nearly unity; and (iv) on scales smaller than < 10 Mpc/h red galaxies are more strongly clustered than blue galaxies.
dc.description11 pages, 3 figures included, invited review at 'New Trends in Theoretical and Observational Cosmology', The 5th RESCEU Symposium, Tokyo, to be published by Universal Academy Press
dc.identifierhttps://arxiv.org/abs/astro-ph/0205382
dc.identifierhttp://arxiv.org/abs/astro-ph/0205382
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/57245
dc.subjectAstrophysics
dc.titleThe 2dF Galaxy Redshift Survey: Cosmological Parameters and Galaxy Biasing
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