Mapping the Universe with the Lyman alpha forest

用莱曼阿尔法森林绘制宇宙地图

• 批准号: 1923402
• 金额: --
• 依托单位: University College London
• 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-1923402
• 关键词: Mapping; Universe; Lyman; alpha; forest

The study of the large scale structure of the Universe can answer some of the most important and challenging questions in physics: the nature of the dark energy causing the acceleration of the Universe; the inflationary origin of the density fluctuations; the physical properties of the dark matter component; and the number of neutrino species and their mass. A novel and exciting approach is to study this structure by looking at the distribution of intergalactic gas as seen in absorption features in the spectra of very high redshift quasars, a phenomenon known as the Lyman alpha forest. The goal of this project is to develop a theoretical framework to model the clustering of the Lyman alpha forest, and compare the predictions to recent and future observations from different international surveys (mainly BOSS and DESI) to provide new insights on dark energy, the nature of dark matter, the mass of the neutrinos and the initial stages of the Universe.

对宇宙大尺度结构的研究可以回答物理学中一些最重要和最具挑战性的问题：导致宇宙加速的暗能量的性质;密度波动的暴胀起源;暗物质成分的物理性质;中微子种类的数量及其质量。一种新颖而令人兴奋的方法是通过观察星系际气体的分布来研究这种结构，这种分布可以在非常高红移类星体的光谱中看到，这种现象被称为莱曼阿尔法森林。该项目的目标是建立一个理论框架来模拟莱曼阿尔法森林的聚集，并将预测与不同国际调查（主要是BOSS和DESI）的最近和未来观测进行比较，以提供关于暗能量，暗物质性质，中微子质量和宇宙初始阶段的新见解。

项目成果

Optimal strategies for identifying quasars in DESI

• DOI: 10.1088/1475-7516/2020/11/015
• 发表时间: 2020-07
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: J. Farr;A. Font-Ribera;A. Pontzen

LyaCoLoRe: Synthetic Datasets for Current and Future Lyman-${\alpha}$ Forest BAO Surveys

LyaCoLoRe：当前和未来 Lyman-${alpha}$ 森林 BAO 调查的综合数据集

• 发表时间: 2019
• 期刊: arXiv e-prints
• 作者: Farr James

Baryon Acoustic Oscillations and the Hubble constant: past, present and future

重子声振荡和哈勃常数：过去、现在和未来

• DOI: 10.1088/1475-7516/2019/10/044
• 发表时间: 2019
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Cuceu A