IAU00044
Presentation type requested: EITHER
RECONSTRUCTING THE DENSITY MAPS OF THE 2DFGRS
Pirin Erdogdu
Institute of Astronomy, University of Cambridge, UK

We reconstruct the density filed of the 2 degree Field Galaxy Redshift Survey (2dFGRS) using the Wiener filtering method. This Bayesian method relies on prior knowledge of the 2dF power spectrum and the combination of matter density and the bias parameter, beta, but the results are not sensitive to these prior parameters. The Wiener method mitigates the 'shot' noise and corrects for selection effects. We present maps of these density fields, and we quantify the connectivity of the large scale structure, in particular identifying several super-clusters and voids.

Lahav Ofer , Zaroubi Saleem , And the 2dfgrs team

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