Probing the Cosmic Web with High Redshift Quasar Absorption Lines

用高红移类星体吸收线探测宇宙网

• 批准号: 9617216
• 负责人: Antoinette Songaila
• 金额: $ 19.5万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9617216&HistoricalAwards=false
• 关键词: Probing; Cosmic; Web; Redshift; Quasar

Cowie, Antoinette 96-17216 Dr. Cowie will determine the deuterium-to-hydrogen ratio in chemically unevolved systems, the evolution of structure in the intergalactic medium, the evolution with redshift of the cosmic microwave background temperature and the invariance of dimensionless physical constants -- all as fundamental tests of cosmological models. The studies will be based on ultra-high signal-to- noise measurements of a large sample of distant quasars using the high resolution spectrograph on the Keck 10-m telescope.

Cowie， Antoinette 96-17216 Cowie博士将确定化学未演化系统中的氘氢比、星系间介质结构的演化、宇宙微波背景温度的红移演化以及无量纲物理常数的不变性——所有这些都是宇宙学模型的基本测试。这些研究将基于使用凯克10米望远镜上的高分辨率摄谱仪对大量遥远类星体样本进行超高信噪比测量。