A New Method for measuring Weak Gravitational Lensing Shear using Higher Order Spin-2 HOLICs
Astrophysics
2009-06-25 v3
Abstract
We investigate the possibility to use higher order moments of gravitational lensed images in the weak lensing analysis. For this purpose we employ spin-2 component of HOLICs(Higher Order Lensing Characteristics) developed by us. We test the weak lensing analysis with spin-2 HOLICs using actual, ground based Subaru observations of the massive galaxy cluster A1689(z=0.183). It turns out that spin-2 HOLICs of order up to 8 are sufficiently applicable for weak lensing analysis after correcting PSF anisotropy as well as isotropic PSF smearing.
Keywords
Cite
@article{arxiv.0805.4498,
title = {A New Method for measuring Weak Gravitational Lensing Shear using Higher Order Spin-2 HOLICs},
author = {Yuki Okura and Toshifumi Futamase},
journal= {arXiv preprint arXiv:0805.4498},
year = {2009}
}
Comments
Accepted for publication in ApJ; 10 pages, 7 figures, uses aastex.cls