Velocity Fields from IRAS-PSCz survey
Branchini, E. · Teodoro, C. S. Frenk L. · Schmoldt, I. · Efstathiou, G. · Saunders, W. · White, S. D. M. · Rowan-Robinson, M. · Sutherland, W. · Tadros, H. · Maddox, S. · Oliver, S. · Keeble, O.
Original · EN
We present a self-consistent nonparametric model of the cosmic velocity field based on the spatial distribution of IRAS galaxies in the recently completed all-sky PSCz redshift survey. The most streaking feature of the PSCz model velocity field is a coherent large-scale streaming motion along the Perseus Pisces, Local Supercluster, Great Attractor and Shapley Concentration baseline, with no evidence for a backinfall into the Great Attractor region. A likelihood analysis has been performed to measure β. We have obtained β=0.6⁺⁰.²²₋₀.₁₅ (1-σ), in agreement with other recent determinations.
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