The 2dF Galaxy Redshift Survey: Wiener Reconstruction of the Cosmic Web

Pirin Erdogdu; Ofer Lahav; Saleem Zaroubi; George Efstathiou; Steve Moody; John A. Peacock; Matthew Colless; Ivan K. Baldry; Carlton M. Baugh; Joss Bland-Hawthorn; Terry Bridges; Russell Cannon; Shaun Cole; Chris Collins; Warrick Couch; Gavin Dalton; Roberto De Propris; Simon P. Driver; Richard S. Ellis; Carlos S. Frenk; Karl Glazebrook; Carole Jackson; Ian Lewis; Stuart Lumsden; Steve Maddox; Darren Madgwick; Peder Norberg; Bruce A. Peterson; Will Sutherland; Keith Taylor

doi:10.1111/j.1365-2966.2004.07984.x

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arXiv · astro-ph/0312546

The 2dF Galaxy Redshift Survey: Wiener Reconstruction of the Cosmic Web

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Abstract

We reconstruct the underlying density field of the 2 degree Field Galaxy Redshift Survey (2dFGRS) for the redshift range 0.035<z<0.200 using the Wiener Filtering method. The Wiener Filter suppresses shot noise and accounts for selection and incompleteness effects. The method relies on prior knowledge of the 2dF power spectrum of fluctuations and the combination of matter density and bias parameters however the results are only slightly affected by changes to these parameters. We present maps of the density field in two different resolutions: 5 Mpc/h and 10 Mpc/h. We identify all major superclusters and voids in the survey. In particular, we find two large superclusters and two large local voids. A version of this paper with full set of colour maps can be found at http://www.ast.cam.ac.uk/~pirin.

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Pirin Erdogdu, Ofer Lahav, Saleem Zaroubi, George Efstathiou, Steve Moody, John A. Peacock, Matthew Colless, Ivan K. Baldry, Carlton M. Baugh, Joss Bland-Hawthorn, Terry Bridges, Russell Cannon, Shaun Cole, Chris Collins, Warrick Couch, Gavin Dalton, Roberto De Propris, Simon P. Driver, Richard S. Ellis, Carlos S. Frenk, Karl Glazebrook, Carole Jackson, Ian Lewis, Stuart Lumsden, Steve Maddox, Darren Madgwick, Peder Norberg, Bruce A. Peterson, Will Sutherland, Keith Taylor. 2003-12-19. The 2dF Galaxy Redshift Survey: Wiener Reconstruction of the Cosmic Web. https://doi.org/10.1111/j.1365-2966.2004.07984.x

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