Unraveling the Mystery of Dark Energy with Galaxy Clusters

用星系团揭开暗能量之谜

• 批准号: DP150103208
• 负责人: A/Prof Christian Reichardt
• 金额: $ 41.38万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP150103208
• 关键词: Unraveling; Mystery; Dark; Energy; Galaxy

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.

星系团是宇宙中质量最大的坍缩天体，它的丰富程度对结构的形成方式呈指数级敏感。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形成红移。星系团将使用多频观测来称重，观测到的星系团丰度将作为质量的函数来解决宇宙学中的两个基本问题：中微子的质量是什么？以及推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前沿的大数据方法方面培养年轻研究人员。