The 2dF Galaxy Redshift Survey: Wiener reconstruction of the cosmic web
Creators
- Erdoğdu, Pirin1, 2
- Lahav, Ofer1, 3
- Zaroubi, Saleem4
- Efstathiou, George1
- Moody, Steve1
- Peacock, John A.5
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Colless, Matthew6
- Baldry, Ivan K.7
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Baugh, Carlton M.8
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Bland-Hawthorn, Joss
- Bridges, Terry
- Cannon, Russell
- Cole, Shaun8
- Collins, Chris9
- Couch, Warrick10
- Dalton, Gavin11, 12
- De Propris, Roberto6
- Driver, Simon P.6
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Ellis, Richard S.13
- Frenk, Carlos S.8
- Glazebrook, Karl7
- Jackson, Carole6
- Lewis, Ian11
- Lumsden, Stuart14
- Maddox, Steve15
- Madgwick, Darren16
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Norberg, Peder17
- Peterson, Bruce A.6
- Sutherland, Will5
- Taylor, Keith13
- 2dFGRS Team
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1.
University of Cambridge
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2.
Middle East Technical University
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3.
University College London
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4.
University of Groningen
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5.
University of Edinburgh
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6.
Australian National University
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7.
Johns Hopkins University
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8.
Durham University
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9.
Liverpool John Moores University
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10.
UNSW Sydney
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11.
University of Oxford
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12.
Rutherford Appleton Laboratory
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13.
California Institute of Technology
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14.
University of Leeds
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15.
University of Nottingham
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16.
Lawrence Berkeley National Laboratory
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17.
ETH Zurich
Abstract
We reconstruct the underlying density field of the Two-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. We use a variable smoothing technique with two different effective resolutions: 5 and 10 h⁻¹ Mpc at the median redshift of the survey. We identify all major superclusters and voids in the survey. In particular, we find two large superclusters and two large local voids. The full set of colour maps can be viewed on the World Wide Web at http://www.ast.cam.ac.uk/∼pirin.
Additional Information
© 2004 RAS. Accepted 2004 May 3. Received 2004 April 30; in original form 2003 November 7. We thank Yehuda Hoffman for his useful comments. The 2dFGRS was made possible through the dedicated efforts of the staff at Anglo-Australian Observatory, both in crediting the 2dF instrument and supporting it on the telescope. PE acknowledges support from the Middle East Technical University, Ankara, Turkey, the Turkish Higher Education Council and Overseas Research Trust. OL and JAP acknowledge the Particle Physics and Astronomy Research Council (PPARC) for their Senior Research Fellowships. This research was conducted utilizing the supercomputer COSMOS at the Department of Applied Mathematics and Theoretical Physics (DAMTP), Cambridge.Attached Files
Published - 352-3-939.pdf
Accepted Version - 0312546.pdf
Files
0312546.pdf
Additional details
Identifiers
- Eprint ID
- 104367
- Resolver ID
- CaltechAUTHORS:20200713-181755933
Related works
Funding
- Middle East Technical University
- Council of Higher Education (Turkey)
- Overseas Research Trust
- Particle Physics and Astronomy Research Council (PPARC)
Dates
- Created
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2020-07-15Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field