RUI: Role of Nonlinear Cross-Field Diffusion in Solar Modulation of Galactic and Anomalous Cosmic Rays

RUI：非线性交叉场扩散在银河系和异常宇宙线太阳调制中的作用

• 批准号: 9810653
• 负责人: A. Barghouty
• 金额: $ 10.3万
• 依托单位: Roanoke College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-15 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9810653&HistoricalAwards=false
• 关键词: RUI; Role; Nonlinear; Cross; Field

The investigator examines the role of nonlinear cross field diffusion in quite-time modulated flux throughout the heliosphere, using a newly developed fully time-dependent, three dimensional numerical solution of the standard cosmic ray transport equation. Using a rigidity-sensitive estimate of nonlinear cross-field diffusion, he critically evaluates a drift-suppressing role of enhanced cross-field diffusion. The project is relevant to heliospheric science and energetic particle studies, stemming from an increased understanding of cosmic ray modulation, a nonlinear element having profound implication in other magnetic turbulence studies. This new element also potentially benefits space and astrophysical plasma turbulence studies, like cosmic ray galactic transport and diffusive shock acceleration.

调查员检查的作用，非线性交叉场扩散在整个日光层的quite-time调制通量，使用新开发的完全依赖于时间的标准宇宙射线传输方程的三维数值解。 使用刚性敏感的非线性交叉场扩散的估计，他严格评估的漂移抑制作用增强交叉场扩散。 该项目与日光层科学和高能粒子研究有关，这是因为对宇宙射线调制的理解有所提高，而宇宙射线调制是一种非线性因素，对其他磁湍流研究具有深远的影响。 这种新元素也可能有利于空间和天体物理等离子体湍流研究，如宇宙射线星系传输和扩散冲击加速。