Seeing in the dark: measuring the signature of the early Universe with low-frequency radio telescopes

在黑暗中观察：用低频射电望远镜测量早期宇宙的特征

• 批准号: DE140100316
• 负责人: Prof Cathryn Trott
• 金额: $ 22.76万
• 依托单位: Curtin University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Early Career Researcher Award
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-03-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DE140100316
• 关键词: Seeing; dark; measuring; signature; early

This project will detect and measure the signature of the first ionising sources in the early Universe. It uses a unique intersection of information theory and analysis methodology to design and implement a method of extracting the faint neutral hydrogen signal of reionisation from complex datasets. The hydrogen structure around these first light sources will be measured using data from the Murchison Widefield Array telescope in Western Australia, revealing the signature of reionisation for the first time. Measurement of this signal constrains our understanding of the large-scale evolution of the Universe, defines properties of the first generation of stars and galaxies, and expands our understanding of the full history of the Universe.

该项目将探测和测量早期宇宙中第一个电离源的特征。它使用信息理论和分析方法的独特交叉点来设计和实现从复杂数据集中提取微弱中性氢再电离信号的方法。这些第一个光源周围的氢结构将使用来自西澳大利亚Murchison Widefield Array望远镜的数据进行测量，首次揭示再电离的特征。对这个信号的测量限制了我们对宇宙大尺度演化的理解，定义了第一代恒星和星系的性质，并扩展了我们对宇宙完整历史的理解。