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

研究者使用新开发的完全时变的标准宇宙射线传输方程的三维数值解，研究了非线性交叉场扩散在整个日球层中相当时间调制的通量中的作用。利用非线性交叉场扩散的刚度敏感估计，他批判性地评估了增强交叉场扩散的漂移抑制作用。该项目与日球层科学和高能粒子研究有关，源于对宇宙射线调制的进一步了解，宇宙射线调制是一种非线性元素，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，如宇宙射线星系输运和扩散冲击加速。

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.