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

Yuki Okura, Toshifumi Futamase

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalAstrophysical Journal
Volume699
Issue number1
DOIs
Publication statusPublished - 2009 Jan 1

Keywords

  • Cosmology: theory
  • Dark matter
  • Galaxies: clusters: individual (A1689)
  • Gravitational lensing

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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