Proposal to Operate and Analyze Data from the High Resolution Fly's Eye Detector (Part IV)

操作和分析高分辨率复眼探测器数据的建议（第四部分）

• 批准号: 0307098
• 负责人: Charles Jui
• 金额: $ 424.17万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-04-01 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0307098&HistoricalAwards=false
• 关键词: Proposal; Operate; Analyze; Data; Resolution

This is a proposal requesting funds to continue to operate the High Resolution Fly's Eye (HiRes) Observatory located on the U.S. Army's Dugway Proving Ground, Utah. The detector is comprised of two stations, separated by 12.6 km, which detect ultra high-energy cosmic rays via nitrogen fluorescence in the atmosphere. The goals of the experiment are to study the spectrum, composition, and anisotropy of cosmic rays starting from 1018 eV to beyond 1020 eV. Previous experiments have shown evidence that the spectrum continues past the predicted Greisen-Zatsepin-Kuzmin (GZK) cutoff. The nature of the events above the cutoff is a puzzle and has stimulated much theoretical speculation. Monocular HiRes data strongly confirm the dip structure observed by the stereo Fly's Eye at 3x1018 eV and the hardening of the spectrum around the GZK cut-off energy. A few outstanding events are observed above 1020 eV. Both the location of the dip structure and the flux of events above 1020 eV are in significant disagreement with published results from the AGASA ground array. This proposal describes how the additional operation of this detector will resolve these and other outstanding issues. HiRes has developed a vigorous educational outreach program, called ASPIRE. This project, conducted in collaboration with the Utah State Office of Education, communicates the excitement of the HiRes scientific research to the general public. The collaboration proposes to continue this successful outreach effort.

这是一项要求资金继续运行位于美国陆军犹他州达格韦试验场的高分辨率蝇眼（HiRes）天文台的提案。 该探测器由两个站组成，相距12.6公里，通过大气中的氮荧光探测超高能宇宙射线。该实验的目标是研究从1018 eV到超过1020 eV的宇宙射线的光谱，成分和各向异性。先前的实验已经表明，光谱继续超过预测的Greisen-Zatsepin-Kuzmin（GZK）截止。截止线以上的事件的性质是一个谜，并激发了许多理论猜测。单目HiRes数据有力地证实了立体蝇眼在3x 1018 eV处观察到的倾角结构和GZK截止能量周围的光谱硬化。在1020 eV以上观察到一些突出的事件。倾角结构的位置和1020 eV以上的事件通量与AGASA地面阵列公布的结果有很大的不同。本提案描述了该探测器的额外操作将如何解决这些和其他未决问题。HiRes开发了一个强有力的教育推广计划，称为ASPIRE。该项目与犹他州教育办公室合作进行，向公众传达HiRes科学研究的兴奋。该协作组织提议继续开展这一成功的外联工作。