A New Method for measuring Weak Gravitational Lensing Shear using Higher Order Spin-2 HOLICs
Yuki Okura, Toshifumi Futamase
TL;DR
This paper introduces a novel method using higher order spin-2 HOLICs to measure weak gravitational lensing shear, demonstrating its effectiveness with real Subaru observations of galaxy cluster A1689.
Contribution
It presents a new approach employing higher order moments of lensed images with spin-2 HOLICs for improved weak lensing analysis.
Findings
Higher order spin-2 HOLICs are effective for weak lensing measurement.
The method successfully corrects for PSF anisotropy and smearing.
Application to Subaru data confirms the method's practicality.
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.