%0 Journal Article
%T Halo-galaxy lensing: A full sky approach
%A de Putter, R.
%A Takada, M.
%J Physical Review D
%D 2010
%V 82
%N 10
%I Amer Physical Soc
%@ 1550-7998
%G English
%F dePutter+Takada2010
%O ISI:000284307100002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=254), last updated on Thu, 17 Feb 2011 12:22:52 +0000
%X The halo-galaxy lensing correlation function or the average tangential shear profile over sampled halos is a very powerful means of measuring the halo masses, the mass profile, and the halo-mass correlation function of very large separations in the linear regime. We reformulate the halo-galaxy lensing correlation in harmonic space. We find that, counterintuitively, errors in the conventionally used flat-sky approximation remain at a percent level even at very small angles. The errors increase at larger angles and for lensing halos at lower redshifts: the effect is at a few percent level at the baryonic acoustic oscillation scales for lensing halos of z similar to 0.2, and comparable with the effect of primordial non-Gaussianity with f(NL) similar to 10 at large separations. Our results allow one to readily estimate/correct for the full-sky effect on a high-precision measurement of the average shear profile available from upcoming wide-area lensing surveys.
%R 10.1103/PhysRevD.82.103522
%U http://arxiv.org/abs/1007.4809
%U https://doi.org/10.1103/PhysRevD.82.103522
%P 103522-9pp