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

Yuki Okura, Toshifumi Futamase

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)143-149
ページ数7
ジャーナルAstrophysical Journal
699
1
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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