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
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- Cosmology with cosmic shear observations: a review
- Means of confusion: how pixel noise affects shear estimates for weak gravitational lensing
- IM3SHAPE: A maximum-likelihood galaxy shear measurement code for cosmic gravitational lensing
- Weak Lensing Mass Measurements of Substructures in COMA Cluster with Subaru/Suprime-Cam
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