Development and application of imaging analysis technique for weak lensing study

2016 Fiscal Year Final Research Report

• Project/Area Number: 26800103
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: Hiroshima University
• Principal Investigator: Utsumi Yousuke 広島大学, 宇宙科学センター, 特任助教 (40700018)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 観測的宇宙論 / 弱重力レンズ銀河団探査 / すばる望遠鏡 / 画像処理

Outline of Final Research Achievements

We apply weak lensing analysis on the imaging data obtained with Subaru / Hyper Suprime-Cam (HSC), to reveal the matter distribution in the universe.
By evaluating the derived matter distribution, we examined the validity of the image analysis technique and made improvements. We also check the validity of the map with the independently obtained 3D galaxy distribution. As a result, we presented the downsizing evolution picture of star-forming galaxy established from other independent studies.

Free Research Field

観測的宇宙論