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.

该奖项是为了继续开发精确阵列以探测电离时代（论文）。论文的重点是宇宙恢复过程中中性层间培养基（IGM）的HI 21-CM信号的统计检测，这是一个事件，与从第一星星和超级大质黑孔中的紫外线辐射引起的紫外线辐射引起的高度离子IgM的过渡相对应。 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南非的卡鲁沙漠。 当前的建议将将纸张的部署扩展到128个要素，并将支持使用GB和SA部署的持续观察和分析。 该计划的更广泛的影响包括在低频射电天文学中提高技术的发展，以及通过培训研究生和博士后的强烈教育重点。 该项目是A2010的建议，是朝着未来的氢化阵列（HERA）氢气时期的主要垫脚石。 纸将可能的制造资金指示到当地的小型企业，从而在美国提供了经济刺激。 外展活动包括研究生对该项目的许多公开谈判。