Large Scale Intensity Mapping of Neutral Hydrogen in the Universe with the Tianlai Pathfinders

天籁探路者号大尺度宇宙中性氢强度测绘

• 批准号: 1616554
• 负责人: Peter Timbie
• 金额: $ 88.1万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1616554&HistoricalAwards=false
• 关键词: Large; Scale; Intensity; Mapping; Neutral

This program will develop new analysis methods for current and upcoming cosmological hydrogen 21cm intensity mapping data from the Tianlai experiment, located in a radio quiet area of Western China. Such mapping provides important clues to the evolution of gas and galaxies in the early universe. Broader impacts include training of undergraduate students and postdocs, and development of inexpensive radio telescopes at Fermilab and UW-Madison using new software-defined-radio techniques for use by high-school and college students, through the NSF/DOE QuarkNet program.The experiment will measure the three dimensional large scale structure of the universe via hydrogen emission from distant galaxies. The primary goal is to develop ways to handle the large foreground signal, which has been previously quantified in a path-finder 21cm program conducted on NSF's Green Bank Telescope.

该项目将为来自位于中国西部无线电安静区域的天来实验的当前和即将到来的宇宙学氢21厘米强度测绘数据开发新的分析方法。这种测绘为早期宇宙中气体和星系的演化提供了重要线索。更广泛的影响包括通过 NSF/DOE QuarkNet 计划培训本科生和博士后，以及在费米实验室和威斯康星大学麦迪逊分校开发廉价射电望远镜，使用新的软件定义无线电技术供高中生和大学生使用。该实验将通过遥远星系的氢发射来测量宇宙的三维大尺度结构。主要目标是开发处理大前景信号的方法，该信号之前已在 NSF 绿岸望远镜上进行的探路 21 厘米计划中进行了量化。