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Cosmology from the 2dF QSO Redshift Survey

Published online by Cambridge University Press:  23 September 2016

Scott Croom ,
Brian Boyle ,
Tom Shanks ,
Phil Outram ,
Adam Myers ,
Robert Smith ,
Lance Miller ,
Ana Lopes ,
Nicola Loaring  and
Fiona Hoyle
Scott Croom
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia
Brian Boyle
Affiliation:
Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia
Tom Shanks
Affiliation:
Dept. of Physics, University of Durham, South Road, Durham, DH1 3LE, UK
Phil Outram
Affiliation:
Dept. of Physics, University of Durham, South Road, Durham, DH1 3LE, UK
Adam Myers
Affiliation:
Dept. of Physics, University of Durham, South Road, Durham, DH1 3LE, UK
Robert Smith
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD, UK
Lance Miller
Affiliation:
Department of Physics, Oxford University, 1 Keble Road, Oxford, OX1 3RH, UK
Ana Lopes
Affiliation:
Department of Physics, Oxford University, 1 Keble Road, Oxford, OX1 3RH, UK
Nicola Loaring
Affiliation:
Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey, RH5 6NT, UK
Fiona Hoyle
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, CH41 1LD, UK

Abstract

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The 2dF QSO Redshift Survey (2QZ) is now complete and available to the astronomical community (see www.2dfquasar.org). In this paper we review some of the principle science results to come from the survey, in particular concentrating on tests for cosmological parameters. Measurements of large-scale structure using the correlation function and power spectrum, together with determinations of the geometric distortion of clustering in redshift-space have been used. These produce a consistent picture which is well matched to the now standard cosmological model with Ωm ≃ 0.3 and ΩΛ ≃ 0.7. In particular, geometric distortions provide evidence for non-zero ΩΛ independent of type Ia supernovae, the CMB, or the assumed type of dark matter (e.g. CDM). However, gravitational lensing results in the form of potential arcminute separation lensed pairs and a stronger than expected anti-correlation between QSOs and foreground galaxies in groups and clusters may prove to be inconsistent with the current standard model. These issues certainly require further investigation.

Type
Session II: Formation of Large-Scale Structure 75
Information
Symposium - International Astronomical Union , Volume 216: Maps of the Cosmos , 2005 , pp. 95 - 104
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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