Synergy between future 21-cm experiments and physical cosmology

未来 21 厘米实验与物理宇宙学之间的协同作用

• 批准号: DE240101129
• 负责人: Dr Yuxiang Qin
• 金额: $ 30.6万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Early Career Researcher Award
• 财政年份: 2024
• 资助国家: 澳大利亚
• 起止时间: 2024-01-01 至 2026-12-31
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DE240101129
• 关键词: Synergy; between; future; 21; cm

The nature of dark matter and formation of the first galaxies are both unsolved mysteries. During the first 500 million years, our universe was filled with hydrogen atoms illuminated by the first galaxies. The 21-cm radiation from this gas encodes properties of unseen galaxies and dark matter during this so-called cosmic dawn. This project aims to build an innovative framework to leverage future 21-cm experiments using The Square Kilometre Array to observe cosmic dawn, and to forecast the optimal constraints on dark matter physics. Additional outcomes include the largest cosmological simulation of the first galaxies powered by neural networks and improved knowledge of their properties using Bayes' theorem and The James Webb Space Telescope.

暗物质的本质和第一个星系的形成都是未解之谜。在最初的5亿年里，我们的宇宙充满了被第一批星系照亮的氢原子。在这个所谓的宇宙黎明期间，来自这种气体的21厘米辐射编码了看不见的星系和暗物质的特性。该项目旨在建立一个创新的框架，利用未来的21厘米实验，使用平方公里阵列观测宇宙黎明，并预测暗物质物理学的最佳约束。其他成果包括由神经网络提供动力的第一个星系的最大宇宙学模拟，以及使用贝叶斯定理和詹姆斯韦伯太空望远镜改进其属性的知识。