Reionization And Diffuse Cosmic Gas

再电离和扩散宇宙气体

• 批准号: DP150102987
• 负责人: Prof Darren Croton
• 金额: $ 24.18万
• 依托单位: Swinburne University of Technology
• 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 2018-07-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP150102987
• 关键词: Reionization; Diffuse; Cosmic; Gas

Everything we see in the Universe, from galaxies to planets, started its life as cosmic gas. At very early times the hydrogen in this gas underwent an important transformation, called reionisation, triggered by the birth of the first stars. Understanding this transformation is a key outstanding question in modern astrophysics and sets up the conditions for all that follows. This project will combine innovative supercomputer simulations of cosmic gas and galaxies, with Keck observations of real diffuse gas and galaxies up to 12 billion light years distant. The project aims to distinguish between two popular reionisation scenarios. The simulations will be made public to the astronomical community.

我们在宇宙中看到的一切，从星系到行星，都是从宇宙气体开始的。在很早的时候，这种气体中的氢经历了一种重要的转变，称为再电离，这是由第一批恒星的诞生引发的。理解这一转变是现代天体物理学中一个关键的突出问题，并为随后的一切奠定了条件。这个项目将结合对宇宙气体和星系的创新的超级计算机模拟，以及对真实扩散气体和120亿光年以外的星系的凯克观测。该项目旨在区分两种流行的重电离场景。这些模拟结果将向天文学团体公开。