Weak lensing analysis of wide field surveys

暗物质构成了宇宙中70%的质量，这一事实在过去10年里被许多独立的观测所证实。暗物质的本质仍然是未知的，这个问题的关键之一在于暗物质在宇宙中的分布方式，以及星系是如何在暗物质晕中形成的。这个项目是用一种叫做弱引力透镜的技术来研究暗物质的分布。它使用测量到的遥远星系的扭曲形状，这是由于视距上存在的物质造成的时空扭曲和曲线造成的。这种扭曲是沿视距投射的暗物质数量的直接估计。我的研究团队将致力于下一代处女座调查，这是加拿大-法国-夏威夷望远镜最近批准的一个大型项目。在接下来的三年里，望远镜的观测时间将达到771个小时。拟议的研究将导致（但不限于）发现非常遥远的新星系团，详细分析暗物质晕的形状和分布作为距离我们的函数，利用室女座星系团附近的星系更好地了解它们的宿主暗物质晕中的星系形成过程。

Dark matter constitutes 70% of the mass present in the Universe, this fact has been confirmed independently by many observations over the past 10 years. The nature of dark matter is still unknown, and one of the keys to this problem lies in the way dark matter is distributed in the Universe, and how galaxies form within dark matter haloes. This project is to investigate the distribution of Dark Matter using a technique called weak gravitational lensing. It uses the measured distorted shape of distant galaxies caused by space time warps and curves due to the presence of matter along the line-of-sight. The distortion is a direct estimator of the amount of dark matter projected along the line-of-sight. My research team will work on the Next Generation Virgo Survey, which is a recently approved Large Program at the Canada France Hawaii Telescope. The observations will take 771 hours on the telescope observing time over the next three years. The proposed research will lead to, but is not limited to, the discovery of very distant new clusters of galaxies, a detailed analysis of the dark matter haloes shapes and distribution as function of distance from us, a much better understanding of the galaxy formation process in their host dark matter halo using the nearby galaxies from the Virgo cluster.