Halo model prediction of the cosmic magnification statistics: the full non-linear contribution

Details Halo model prediction of the cosmic magnification statistics: the full non-linear contribution Halo model prediction of the cosmic magnification statistics: the full non-linear contribution

2003-05-20

arxiv.org/abs/astro-ph/0305381v3

Mon.Not.Roy.Astron.Soc. 346 (2003) 949

Astronomy and Astrophysics

Astrophysics

14 pages, 8 figures, accepted for publication in MNRAS. Added discussion of a realistic model of the QSO-galaxy cross-correlat

Scientific paper

10.1111/j.1365-2966.2003.07145.x

The lensing magnification effect due to large-scale structure is statistically measurable by correlation of size fluctuations in distant galaxy images as well as by the QSO-galaxy cross-correlation. We use the halo model formulation of Takada & Jain (2003) to compute these magnification-induced correlations without employing the weak lensing approximation, mu=1+2kappa. Our predictions thus include the full contribution from non-linear magnification that is due to lensing halos. We compare the model prediction with ray-tracing simulations and find excellent agreement over a range of angular scales (0.'5

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