Unraveling the Mystery of Dark Energy with Galaxy Clusters

星系团是宇宙中质量最大的坍缩物体，它们的丰度对结构的形成方式非常敏感。该项目旨在利用Sunyaev-Zel'dovich效应在2500平方度的天空中发现大质量星系团的红移。星系团将使用多频观测进行称重，观测到的星系团丰度将被用作质量的函数，以解决宇宙学中的两个基本问题：中微子质量是多少？驱动宇宙加速膨胀的暗能量的本质是什么？该项目将在现代宇宙学的前沿对年轻研究人员进行大数据方法的培训。

The abundance of galaxy clusters, the most massive collapsed objects in the Universe, is exponentially sensitive to how structure forms. This project aims to discover massive galaxy clusters out to their redshift of formation in 2500 square degrees of sky using the Sunyaev-Zel'dovich effect. Galaxy clusters will be weighed using multi-frequency observations and the observed abundance of galaxy clusters will be used as a function of mass to address two fundamental questions in cosmology: what are the neutrino masses? and what is the nature of the dark energy that is driving the accelerating expansion of the Universe? The project will train young researchers in big data methods at the cutting edge of modern cosmology.