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Colour gradient bias in weak lensing observation
主讲人 主持人
时间 2017-03-14 16:40:48 报告题目
首作者 People
职称 联系电话
邮箱 研究方向
主讲人简介 地点
办公室 研究院 INAF
日期: 
2017/03/14        
People: 
尔欣中博士
Institute: 
INAF

Title: Colour gradient bias in weak lensing observation

Speaker:Doctor Xinzhong Er
Institute: INAF-Observatory of Rome
Time:2017.03.14(Tuesday) 10:10
Place:Physics Building 407, Haiyun Campus, Xiamen University
Abstract:Weak gravitational lensing is one of the powerful tool in cosmology. It can probe the dark matter distribution without assuming the nature or dynamic status of the matter, from small scale, galaxy halo, galaxy cluster to large scale structures of the universe.  One of the most important issue in weak lensing is how to correct the PSF of the lensed image.  The wide band receiver in space telescope can take the advantages of small space PSF. With the increasing accuracy, we are facing another problem: the spatial variations of SED. I will talk about this problem and how we going to calibration it for the future weak lensing survey.