Probing the intergalactic and circumgalactic medium in absorption and emission.

探测星系间和星系际介质的吸收和发射。

• 批准号: 1918081
• 金额: --
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1918081
• 关键词: Probing; intergalactic; circumgalactic; medium; absorption

In this project, we will develop new models of the emission and absorption properties of the intergalactic and circumgalactic medium combining novel hydrodynamic simulations with advanced radiative transfer techniques. The project will focus on connecting the properties of the circumgalactic medium on small scales with the properties of the intergalactic medium at larger scales, as probed by spectroscopy both in absorption and emission. By generating mock observables for emission and absorption lines, this study will provide state-of-the art predictions and modeling for ongoing and future surveys (such as DESI and MUSE programmes at VLT), which are providing and will provide an unprecedented view of the nature of the intergalactic/circumgalactic medium as a function of redshift.

在这个项目中，我们将开发星系际和环星系介质的发射和吸收特性的新模型，结合新的流体动力学模拟与先进的辐射传输技术。该项目将侧重于将小尺度的环星系介质的性质与较大尺度的星系间介质的性质联系起来，如吸收和发射光谱学所探测的那样。通过生成模拟观测的发射和吸收线，这项研究将提供最先进的预测和建模，为正在进行和未来的调查（如DESI和VLT的MUSE计划），这是提供并将提供一个前所未有的观点的性质的星系际/环星系介质作为红移的函数。

项目成果

Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes

利用无恒星暗物质晕中的荧光发射确定原始氦丰度和紫外背景

• DOI: 10.1093/mnras/stz3573
• 发表时间: 2020
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Sykes C

Fluorescent rings in star-free dark matter haloes

无恒星暗物质晕中的荧光环

• DOI: 10.1093/mnras/stz1234
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Sykes C