QSO Lensing Magnification: A Comparison of 2QZ and SDSS Results

Details QSO Lensing Magnification: A Comparison of 2QZ and SDSS Results QSO Lensing Magnification: A Comparison of 2QZ and SDSS Results

2007-01-30

arxiv.org/abs/astro-ph/0701870v2

2007, MNRAS, 380, 113M

Astronomy and Astrophysics

Astrophysics

15 pages, 20 figures, accepted by MNRAS

Scientific paper

10.1111/j.1365-2966.2007.11875.x

The lensing of background QSOs by foreground galaxies is a powerful probe of the mass density of the Universe and the power spectrum of mass clustering. However, the 2dF QSO survey suggested that a strong anticorrelation effect at g<21 was seen for both galaxies and clusters which implied that galaxies are anti-biased (b~0.1) on small scales at a higher level than predicted by the standard cosmology (Myers et al., 2003, 2005) whereas results from SDSS suggested that the effect was much smaller (b~0.6) and in line with standard expectations (Scranton et al., 2005). We first cross-correlate the SDSS photo-z, g<21, 1.0

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