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: 0962666
• 负责人: Mihir Desai
• 金额: $ 12.63万
• 依托单位: Southwest Research Institute
• 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 2013-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0962666&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研究在太阳活动周期22和23期间观测到的共旋转相互作用区域（CIRs）沿行星际磁场的能谱、时间强度分布和带电粒子流的演变。他们将利用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数据来研究这些CIR事件。该团队还将基于他们现有的“日球层中的粒子加速和输运”（PATH）数值代码开发一个新的理论模型，以研究与CIRs相关的随时间的加速和粒子输运，以及探测CIRs的3D结构以及地球观察者与地球轨道之外的远程CIR位置之间磁连接的演变。了解与CIRs相关的太阳高能粒子（SEP）事件的性质仍然是科学界的一个突出问题。这项研究将产生关于CIRs的三维结构和行星际磁场的配置的新信息，这两者对于未来全球日球层模型的发展至关重要，这反过来对空间天气预报也很重要。研究成果将在科学会议和鼓励学生参与的小型讲习班上向更广泛的社区展示。该小组还将通过同行评议的期刊和基于网络的每月电子通讯发表研究结果。在这个项目中，阿拉巴马大学亨茨维尔分校（UAH）和德克萨斯大学圣安东尼奥分校（UTSA）的几名研究生和本科生将得到支持。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）的现有研究项目。