Halo asphericity and the shear 3-pt function

Details Halo asphericity and the shear 3-pt function Halo asphericity and the shear 3-pt function

2003-12-10

arxiv.org/abs/astro-ph/0312253v2

Astrophys.J.607:40-42,2004

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures. Minor changes to match version accepted by ApJ

Scientific paper

10.1086/383262

We demonstrate through the use of a simple toy model that asphericity in dark matter halos has a measurable effect on the configuration dependence of the weak lensing shear 3-point function at small scales. This sensitivity provides a way, in principle, to measure the shapes of dark matter halos. The distribution of halo ellipticities should be included in models aiming at a high fidelity prediction of n-point shear correlation statistics.

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