Charge Dependence of Cosmic Ray Solar Modulation

ATM0001444abb研究人员将继续对太阳风的一系列基本性质及其与宇宙射线的相互作用进行理论研究和相关的计算机模拟和建模，包括高能太阳粒子。这项研究将包括研究行星际磁场和等离子体的结构，特别强调磁场结构对宇宙线和高能粒子加速、传播和各向异性的影响。先前关于宇宙射线在日光层中的传输和加速的工作导致创建了一个大型软件库，用于模拟宇宙线的传输和加速。这个库将被扩展并用于获得宇宙线传输和加速的完整的二维和三维、与时间相关的模拟。将研究星际空间中粒子加速的机制，以及高能粒子对太阳风的动力学及其终止的影响。研究人员将改进二维模型，以包括银河系和反常宇宙射线对全球太阳风的动力学影响，并研究与时间相关的瞬时效应，预计这些效应在当前的太阳活动高峰期将是重要的。

ATM0001444absThe investigators will continue theoretical studies and associated computer simulation and modeling of a range of basic solar wind properties and their interactions with cosmic rays, including energetic solar particles. The research will include studies of the structure of the interplanetary magnetic field and plasma, with particular emphasis on the effect of the field's structure on cosmic ray and energetic particle acceleration, propagation and anisotropies. Previous work on the transport and acceleration of cosmic rays in the heliosphere has led to the creation of a large library of software for the modeling of cosmic ray transport and acceleration. This library will be extended and used to obtain full two- and three-dimensional, time-dependent simulations of cosmic ray transport and acceleration. Mechanisms of particle acceleration in interplanetary space, and the effects of energetic particles on the dynamics of the solar wind and its termination will be studied. The investigators will improve two-dimensional models to include the dynamical effects of galactic and anomalous cosmic rays on the global solar wind, and to study time-dependent, transient effects which are expected to be important during the current solar maximum.