Collaborative Research: SHINE--Observations and Modeling of the Longitudinal Extent and Variation of Multi-Spacecraft Solar Energetic Particle (SEP) Events

合作研究：SHINE——多航天器太阳高能粒子（SEP）事件的纵向范围和变化的观测和建模

• 批准号: 1156004
• 负责人: Christina Cohen
• 金额: $ 17.09万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-03-15 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1156004&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Observations; Modeling

This collaborative research team will investigate the relative roles of shock acceleration, flare acceleration, suprathermal particle composition, and particle transport as a function of position (along the shock and/or the longitudinal distance from the solar source region). The relative contributions of flare and shock acceleration to solar energetic particle (SEP) events and their resulting compositional signatures are as yet undetermined, and this fact provides the motivation for this work. The research team will use observations of specific individual SEP events obtained from multiple spacecraft, rather than attempting to infer phenomenology through statistical studies of many events measured by a single spacecraft under varying conditions, as has been done in the past. This approach will allow a more accurate determination of the driving coronal mass ejection's source region and of its related properties. The team's analysis technique will also provide a more global view of solar activity and non-local effects, which may play an important role in the generation of SEP events and in determining their longitudinal extent. This effort will directly address open scientific questions regarding SEP composition and particle transport. Understanding the production, composition, and extent of SEP events is critical for accurate predictions of space weather and its potential impact on astronauts and satellites. The team will disseminate their scientific results through published articles, scientific talks, and the web pages associated with the relevant NASA spacecraft missions. This project will contribute to the training of a postdoctoral researcher as a co-investigator at George Mason University, and, through an international collaboration, a graduate student in Germany. The team will also supervise and train students at the University of Arizona and the Naval Research Laboratory who will work on this project. The Lead Principal Investigator at the California Institute of Technology is an active participant in "Solar Week," a local program designed to encourage high school girls to pursue careers in science.

该协作研究团队将研究冲击加速度，耀斑加速度，超颗粒组成和粒子传输的相对作用，这是位置的函数（沿着冲击和/或来自太阳能源区域的纵向距离）。耀斑和冲击加速度对太阳能粒子（SEP）事件及其由此产生的组成特征的相对贡献尚未确定，这一事实为这项工作提供了动机。研究团队将使用从多个航天器获得的特定单个SEP事件的观察，而不是试图通过对不同条件下单个航天器测量的许多事件来推断现象学的研究，就像过去一样。这种方法将允许更准确地确定驱动冠状质量弹出量的源区域及其相关特性。该团队的分析技术还将为太阳活动和非本地效应提供更全球的看法，这可能在SEP事件的产生和确定其纵向范围中起重要作用。这项工作将直接解决有关SEP组成和颗粒传输的开放科学问题。了解SEP事件的生产，组成和程度对于准确预测太空天气及其对宇航员和卫星的潜在影响至关重要。该团队将通过发表的文章，科学演讲以及与相关的NASA航天器任务相关的网页来传播他们的科学结果。该项目将有助于在乔治·梅森大学（George Mason University）的共同研究人员中培训博士后研究员，并通过国际合作培训德国的研究生。该团队还将监督和培训亚利桑那大学和海军研究实验室的学生，他们将在该项目中工作。加利福尼亚理工学院的首席首席研究员是“太阳周”的积极参与者，这是一项本地计划，旨在鼓励高中女生从事科学职业。