Collaborative Research: Precision Array for Probing the Epoch of Reionization (PAPER)

合作研究：用于探测再电离时代的精密阵列（论文）

• 批准号: 1125558
• 负责人: Richard Bradley
• 金额: $ 184.2万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1125558&HistoricalAwards=false
• 关键词: Collaborative; Research; Precision; Array; Probing

This award is for continuation of the development of the Precision Array to Probe the Epoch of Reionization (PAPER). The focus of PAPER is the statistical detection of HI 21-cm signals from the neutral intergalactic medium (IGM) during cosmic reionization, an event corresponding to the transition from a fully neutral IGM to a highly ionized IGM caused by the UV radiation from the first stars and supermassive black holes. Probing this last unexplored phase of cosmic evolution has been called out by the Astro2010 Decade Survey as the primary area with extraordinary discovery potential in the study of cosmic structure formation, and this constitutes the main intellectual impact of this research.During the previous award period, under AST-0804508 and AST-0804523, PAPER established observing sites with 32 antenna elements at both NRAO Green Bank and in the Karoo Desert of South Africa. The current proposal will expand the SA deployment of PAPER to 128 elements and will support on-going observations and analysis using both the GB and SA deployments. Broader impacts of the program include advancement of techniques in low frequency radio astronomy, and a strong educational emphasis through training of graduate students and postdocs. The project is a major stepping stone toward a future Hydrogen Epoch of Reionization Array (HERA), as recommended by A2010. PAPER has directed fabrication funds where possible to local small businesses, thus providing economic stimulus in the US. Outreach activities have included a number of public talks on the project by graduate students.

该奖项旨在表彰对再电离时代探测精密阵列（PAPER）的持续开发。 PAPER 的重点是在宇宙再电离过程中对来自中性星系间介质 (IGM) 的 HI 21 厘米信号进行统计检测，这一事件对应于由第一代恒星和超大质量黑洞的紫外线辐射引起的从完全中性 IGM 到高度电离 IGM 的转变。探索宇宙演化的最后一个未探索阶段已被 Astro2010 十年巡天称为在宇宙结构形成研究中具有非凡发现潜力的主要领域，这构成了这项研究的主要智力影响。在上一个奖项期间，根据 AST-0804508 和 AST-0804523，PAPER 在 NRAO Green Bank 和 南非卡鲁沙漠。 目前的提案将 PAPER 的 SA 部署扩展到 128 个元素，并将支持使用 GB 和 SA 部署进行持续的观察和分析。 该计划的更广泛影响包括低频射电天文学技术的进步，以及通过培训研究生和博士后来强调教育。 根据 A2010 的建议，该项目是迈向未来氢时代再电离阵列 (HERA) 的重要垫脚石。 PAPER 尽可能将制造资金引导至当地小企业，从而刺激美国的经济。 外展活动包括研究生就该项目进行的多次公开演讲。