Theoretical Studies of Interplanetary Magnetic Fields: Turbulence and Cosmic Rays

行星际磁场的理论研究：湍流和宇宙线

• 批准号: 0001444
• 负责人: Jack Jokipii
• 金额: $ 28.5万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001444&HistoricalAwards=false
• 关键词: Theoretical; Studies; Interplanetary; Magnetic; Fields

ATM0001444The 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.

研究人员将继续对一系列基本太阳风特性及其与宇宙射线（包括高能太阳粒子）的相互作用进行理论研究和相关的计算机模拟和建模。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射线和高能粒子加速、传播和各向异性的影响。先前关于宇宙射线在日球层的传输和加速的工作已经导致创建了一个大型的软件库，用于宇宙射线传输和加速的建模。这个库将被扩展并用于获得完整的二维和三维，宇宙射线传输和加速的时间相关模拟。将研究行星际空间中粒子加速的机制，以及高能粒子对太阳风动力学及其终止的影响。研究人员将改进二维模型，以包括星系和异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态效应，这些效应预计在当前太阳活动极大期非常重要。