Physics of the Interplanetary Medium: A Turbulence Perspective

这个项目将研究行星际介质中湍流的起源和动力学。湍流将被纳入太阳风的平均场模型中，并将研究湍流对激波的作用以及激波中粒子的加速。湍流在宇宙射线调制中的作用也将被研究。通过在大尺度太阳风模式中引入湍流耗散源项，可以实现湍流与太阳风平均场模式的耦合。为了研究湍流在激波中的作用，激波的微观和宏观耦合模型将被用来推广Rankine-Hugoniot条件。湍流对宇宙线调制的影响将通过在现有的宇宙线传输程序中加入湍流散射来实现。

AbstractThis project will examine the origin and dynamics of turbulence in the interplanetary medium. Turbulence will be incorporated into mean-field models of the solar wind and the role of turbulence on shock waves and the acceleration of particles at shocks will be investigated. The role of turbulence in the modulation of cosmic rays will also be investigated. The coupling of turbulence to the mean-field models of the solar wind will be accomplished by introducing source terms for the dissipation of turbulence into the large-scale solar wind model. To investigate the role of turbulence in shocks, coupled microscopic and macroscopic models of the shock waves will be used to generalize the Rankine-Hugoniot conditions. The influence of turbulence on cosmic ray modulation will be accomplished by adding turbulent scattering to existing cosmic ray transport codes.