Imperial College London
Alternate

ProfessorDanielMortlock

Faculty of Natural Sciences, Department of Physics

Professor of Astrophysics and Statistics
 
 
 
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Contact

 

+44 (0)20 7594 7878d.mortlock Website

 
 
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Location

 

1018ABlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Mortlock:2001:10.1046/j.1365-8711.2001.04065.x,
author = {Mortlock, DJ and Webster, RL},
doi = {10.1046/j.1365-8711.2001.04065.x},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {629--641},
title = {Using the 2 degree field galaxy redshift survey to detect gravitationally lensed quasars},
url = {http://dx.doi.org/10.1046/j.1365-8711.2001.04065.x},
volume = {321},
year = {2001}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Galaxy redshift surveys can be used to detect gravitationally lensed quasars if the spectraobtained are searched for the emission lines of quasars. Previous investigations of thispossibility have used simple models to show that the 2 degree Field (2dF) redshift surveycould yield several tens of new lenses, and that the larger Sloan Digital Sky Survey shouldcontain an order of magnitude more. However the particular selection effects of the sampleswere not included in these calculations, limiting the robustness of the predictions; thus amore detailed simulation of the 2dF survey was undertaken here. The use of an isophotalmagnitude limit reduces both the depth of the sample and the expected number of lenses, butmore important is the Automatic Plate Measuring survey's star±galaxy separation algorithm,used to generate the 2dF input catalogue. It is found that most quasar lenses are classed asmerged stars, with only the few lenses with low-redshift deflectors likely to be classified asgalaxies. Explicit inclusion of these selection effects implies that the 2dF survey shouldcontain 10 lenses on average. The largest remaining uncertainty is the lack of knowledge ofthe ease with which any underlying quasars can be extracted from the survey spectra.
AU  - Mortlock,DJ
AU  - Webster,RL
DO  - 10.1046/j.1365-8711.2001.04065.x
EP  - 641
PY  - 2001///
SN  - 0035-8711
SP  - 629
TI  - Using the 2 degree field galaxy redshift survey to detect gravitationally lensed quasars
T2  - Monthly Notices of the Royal Astronomical Society
UR  - http://dx.doi.org/10.1046/j.1365-8711.2001.04065.x
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000167629700005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/73452
VL  - 321
ER  -
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