Antarctic Long Duration Balloon Flight for the JACEE Collaboration

JACEE 合作的南极长期气球飞行

• 批准号: 9876428
• 负责人: R. Jeffrey Wilkes
• 金额: $ 10.19万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876428&HistoricalAwards=false
• 关键词: Antarctic; Long; Duration; Balloon; Flight

This action will complete the analysis of measurements of high energy cosmic rays made at high altitudes over the antarctic continent. The balloon flights were part of the Japanese American Cosmic Ray Emulsion Chamber Experiment (JACEE), an internationally cooperative study of primary cosmic rays at energies greater than 1 TeV. Extremely high energy cosmic rays show some unexpected and currently unexplained behavior. Above approximately 1000 TeV the flux of particles is much less than is expected from extrapolating the intensity of source processes, and while several reasonable physical models of acceleration and propagation can account for the change in the slope of the flux as a function of energy curve, more primary data is needed to determine which model is the correct one. Currently, results from the JACEE program on the primary spectrum and composition of cosmic rays are widely used by the particle astrophysics community as a standard reference for spectra in the very high energy range.

这一行动将完成对南极大陆高空高能宇宙射线测量的分析。 此次气球飞行是日美宇宙射线乳化室实验 (JACEE) 的一部分，该实验是一项针对能量大于 1 TeV 的初级宇宙射线的国际合作研究。极高能量的宇宙射线表现出一些意想不到且目前无法解释的行为。 在大约 1000 TeV 以上，粒子通量远小于推断源过程强度所预期的，虽然几个合理的加速和传播物理模型可以解释通量斜率随能量曲线变化的变化，但需要更多的主要数据来确定哪个模型是正确的。 目前，JACEE 计划关于宇宙射线初级光谱和成分的结果被粒子天体物理学界广泛用作极高能量范围光谱的标准参考。