A New Method for measuring Weak Gravitational Lensing Shear using Higher Order Spin-2 HOLICs
arXiv:0805.4498 · doi:10.1088/0004-637X/699/1/143
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.
Accepted for publication in ApJ; 10 pages, 7 figures, uses aastex.cls