Collaborative Research: SHINE--Observations and Modeling of Energetic Particles Associated with Corotating Interaction Regions During Solar Cycles 23 and 24

合作研究：SHINE——第 23 和 24 太阳周期期间与共转相互作用区域相关的高能粒子的观测和建模

• 批准号: 0962658
• 负责人: Gang Li
• 金额: $ 17.26万
• 依托单位: University of Alabama in Huntsville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2013-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0962658&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Observations; Modeling

This collaborative research team will investigate the evolution of energy spectra, time-intensity profiles, and charged particle flows along and across the interplanetary magnetic field in co-rotating interaction regions (CIRs) observed during solar cycles 22 and 23. They will use measurements of energetic particles, magnetic fields, and solar wind plasma obtained by the ACE, Wind, and STEREO spacecraft to study these CIR events. This team will also develop a new theoretical model, based on their existing 'Particle Acceleration and Transport in the Heliosphere' (PATH) numerical code, in order to study the time-dependent acceleration and transport of particles associated with CIRs, as well as to probe the 3D structure of CIRs and the evolution of magnetic connections between an observer at Earth and remote CIR locations beyond Earth orbit.Understanding the properties of solar energetic particle (SEP) events associated with CIRs remains an outstanding problem for the scientific community. This study will yield new information about the 3D structure of CIRs and the configuration of the interplanetary magnetic field, both of which are crucial for the development of future global heliospheric models, which are in turn important for space weather forecasting. Research results will be presented to the broader community at scientific meetings and at smaller workshops where student participation is encouraged. The team will also publish findings via peer-reviewed journals and web-based monthly electronic newsletters. In this project, several graduate and undergraduate students will be supported at the University of Alabama at Huntsville (UAH) and at the University of Texas at San Antonio (UTSA). This project will integrate and synergize existing research programs at UAH, the Southwest Research Institute (SwRI) in San Antonio, and the Johns Hopkins University's Applied Physics Laboratory (JHU/APL).

这个合作研究小组将调查在太阳活动周期22和23期间观察到的同向旋转相互作用区域（CIR）中沿沿着和穿过行星际磁场的能谱、时间-强度分布和带电粒子流的演变。他们将使用ACE、Wind和STEREO航天器获得的高能粒子、磁场和太阳风等离子体的测量结果来研究这些CIR事件。该团队还将开发一个新的理论模型，基于他们现有的“粒子加速和传输在日光层”（PATH）数字代码，以研究与CIR相关的粒子的时间依赖性加速和传输，以及探测CIR的3D结构和地球观测者与地球轨道以外的远程CIR位置之间的磁连接的演变。与CIR相关的太阳高能粒子（SEP）事件仍然是科学界的一个突出问题。这项研究将产生关于电离层红外线三维结构和行星际磁场配置的新信息，这两者对于开发未来全球日光层模型至关重要，而日光层模型又对空间天气预报至关重要。研究结果将在科学会议和鼓励学生参与的小型研讨会上向更广泛的社区展示。该小组还将通过同行评审期刊和基于网络的每月电子通讯发表调查结果。在这个项目中，几个研究生和本科生将支持在亨茨维尔（UAH）的亚拉巴马大学和在圣安东尼奥（UTSA）的得克萨斯大学。该项目将整合和协同UAH，圣安东尼奥西南研究所（SwRI）和约翰霍普金斯大学应用物理实验室（JHU/APL）的现有研究计划。