报告题目：Weak lensing Study in VOICE Survey

报 告 人：傅莉萍 教授 上海师范大学

报告摘要: The VST Optical Imaging of the CDFS and ES1 Fields (VOICE) Survey is a Guaranteed Time programme carried out with the European Southern Observatory (ESO) VLT Survey Telescope (VST) telescope to provide deep optical imaging over two 4 deg2 patches of the sky centred on the Chandra Deep Field South (CDFS) and ES1 as part of the ESO-Spitzer Imaging Extragalactic Survey. We present the cosmic shear measurement over the 4 deg2 covering the CDFS region in the r band using LensFit. The photometric redshifts are estimated using the VOICE u, g, r, i together with near-infrared VIDEO data Y, J, H, Ks. The mean redshift of the shear catalogue is 0.87, considering the shear weight. The effective galaxy number density is 16.35 gal arcmin？ 2.

We perform image simulations to calibrate possible biases of the measured shear signals.The multiplicative bias is calibrated to reach an accuracy of ～3.0 per cent. Furthermore, we also study the bias sensitivities to the undetected faint galaxies and to the neigh bouring galaxies.

报告人简介：

傅莉萍，上海师范大学，上海市星系与宇宙学半解析研究重点实验室，教授。长期从事基于天文望远镜大规模巡天数据的观测宇宙学（弱引力透镜、宇宙剪切）领域的研究，从原始数据出发，通过精细的处理、测量和理论分析，探测剪切信号并开展宇宙学研究。

 

傅莉萍于2008年获得欧盟玛丽居里博士奖学金资助，在法国巴黎天体物理研究所取得博士学位。2008年-2010年，获得玛丽居里博士后基金资助，在意大利那不勒斯天文台做博士后。回国后在上海师范大学，上海市星系与宇宙学半解析研究重点实验室任职。

 

先后获得上海市晨光人才、浦江人才、曙光人才。获得2018年国家基金委优秀青年科学基金资助；累计主持国家级项目3项、省部级项目3项。

报告地点：台本部南楼206会议室

报告时间：2019年7月26日（周五）上午12：30