SIMBAD references

2009ApJ...699..143O - Astrophys. J., 699, 143-149 (2009/July-1)

A new method for measuring weak gravitational lensing shear using higher order Spin-2 HOLICs.

OKURA Y. and FUTAMASE T.

Abstract (from CDS):

We investigate the possibility of using 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 Image's 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 point-spread function (PSF) anisotropy as well as isotropic PSF smearing.

Abstract Copyright: ∼

Journal keyword(s): cosmology: theory - dark matter - galaxies: clusters: individual: A1689 - gravitational lensing

Simbad objects: 2

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