A measurement of the cosmological mass density from clustering in the 2dF galaxy redshift survey
Peacock, John A; Cole, Shaun; Norberg, P; Baugh, Carlton M; Bland-Hawthorn, Joss; Bridges, Terry; Cannon, Russell; Colless, Matthew; Collins, Chris; Couch, Warrick; Dalton, Gavin; Deeley, Kathryn; de Propris, Roberto; Driver, Simon P; Efstathiou, George; Ellis, Richard S; Frenk, Carlos S; Glazebrook, Karl; Jackson, Carole; Lahav, Ofer; Lewis, I J; Lumsden, Stuart; Maddox, Steve J; Percival, Will J; Peterson, Bruce; Price, Ian; Sutherland, Will; Taylor, Keith
The large-scale structure in the distribution of galaxies is thought to arise from the gravitational instability of small fluctuations in the initial density field of the Universe. A key test of this hypothesis is that forming superclusters of galaxies should generate a systematic infall of other galaxies. This would be evident in the pattern of recessional velocities, causing an anisotropy in the inferred spatial clustering of galaxies. Here we report a precise measurement of this clustering,...[Show more]
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