The Interactions of Energetic Particles with the Solar Wind - A Theoretical Study

高能粒子与太阳风的相互作用 - 理论研究

• 批准号: 9215279
• 负责人: Martin Lee
• 金额: $ 19.82万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-15 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9215279&HistoricalAwards=false
• 关键词: Interactions; Energetic; Particles; Solar; Wind

This project will provide theoretical studies of the interactions of energetic particles with the solar wind. The studies will be broad-based and include interstellar and cometary pickup ions, galactic cosmic rays, shock-accelerated particles including the cosmic ray anomalous component, and solar slare particles. A unifying theme is the influence of genergetic particles on the structure and location of the solar wind termination shock. The investigations will emphasize analytical methods, the microprocesses governing the interactions including wave excitation by the energetic particles, and comparisons between the theoretical results and spacecraft oberservations. The goal of the study is a better understanding of the structure of the heliosphere and its enegetic particles. Specific topics of research are, for example: 1) A prediction of the momentum- and mass-loading of the solar wind by interstellar H+ and He+. 2) A prediction of the shift in the location of the termination shock due to interstellar pickup ions and cosmic rays. 3) Development of an analytical model for the solar-cycle variation of cosmic rays at high energies. 4) Acceleration of lower-energy "seed" particles at shocks.

这个项目将提供高能粒子与太阳风相互作用的理论研究。这些研究将是基础广泛的，包括星际和彗星拾取离子、银河宇宙射线、冲击波加速粒子（包括宇宙射线异常成分）和太阳恒星粒子。一个统一的主题是一般粒子对太阳风终止激波的结构和位置的影响。研究将强调分析方法、控制相互作用的微过程，包括高能粒子的波激发，以及理论结果与航天器观测结果之间的比较。这项研究的目的是更好地了解日球层的结构及其高能粒子。具体的研究课题有：1)预测星际H+和He+对太阳风的动量和质量载荷。2)星际拾取离子和宇宙射线对终端激波位置移动的预测。3)建立了高能宇宙射线太阳周期变化的解析模型。4)激波下低能“种子”粒子的加速。