SHINE: Reconstructing Interplanetary Coronal Mass Ejection Evolution Using In-Situ Filament Plasma

SHINE：使用原位细丝等离子体重建行星际日冕物质抛射演化

• 批准号: 1358268
• 负责人: Jason Gilbert
• 金额: $ 34.34万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1358268&HistoricalAwards=false
• 关键词: SHINE; Reconstructing; Interplanetary; Coronal; Mass

The main goal of this 3-year SHINE project is to improve present understanding of the heating and acceleration of Coronal Mass Ejections (CMEs) by examining the physics of interplanetary CME (ICME) evolution, especially as it relates to the filament material and its reflection of the energization of the ejecta. In-situ data and new analysis techniques will both be employed to measure the low charge states of heavy ions for the first time, revealing previously undetected ICME core material. The science objectives aimed with this project are highly relevant to topics that are central to the SHINE community. A fundamental part of the research work integrates the expertise of young scientists at the University of Michigan at Ann Arbor with the professional training of seasoned researchers. In addition to providing the community with a comprehensive list of in-situ observations of cold ICMEs, this work will also provide a thermal history of the plasma involved. Future models by the community will be constrained and improved by these plasma results. By including researchers at the undergraduate level in several of the data analysis tasks, this work will also act as a tool to educate and give experience to the rising generation. The research and EPO agenda of this project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.The comprehensive survey to result from this SHINE project will relate cold ICME material in the heliosphere to the eruption process at the Sun through two main objectives: (i) determine the prevalence of filament material within ICMEs; and, (ii) determine the physical properties of the CME plasma during the eruption process that are responsible for either preserving or obliterating filament material on its way from the corona into the Heliosphere. The Michigan Ionization Code (MIC) will be used to predict charge state evolution in the filament in order to: (i) investigate the formation of higher charge states and the survival of low charge state ions during the eruption process; and, (ii) reconstruct the energetics of erupting filaments, including the temperature, density, and velocity evolution of the plasma from launch to the freeze-in point. Thus, the outcome of this project is expected to be of great value to the solar-heliospheric community, and SHINE in particular.

这个为期 3 年的 SHINE 项目的主要目标是通过研究行星际物质抛射 (ICME) 演化的物理原理，特别是与灯丝材料及其对抛射物激发的反射有关的物理原理，提高目前对日冕物质抛射 (CME) 加热和加速的理解。 原位数据和新的分析技术将首次用于测量重离子的低电荷态，揭示以前未检测到的 ICME 核心材料。 该项目的科学目标与 SHINE 社区的核心主题高度相关。 研究工作的一个基本部分是将密歇根大学安娜堡分校年轻科学家的专业知识与经验丰富的研究人员的专业培训相结合。 除了为社区提供冷 ICME 现场观测的完整列表外，这项工作还将提供所涉及等离子体的热历史。 社区未来的模型将受到这些等离子结果的约束和改进。 通过让本科生研究人员参与多项数据分析任务，这项工作也将成为教育下一代并为其提供经验的工具。 该项目的研究和 EPO 议程支持 AGS 部门在发现、学习、多样性和跨学科研究方面的战略目标。该 SHINE 项目的综合调查将通过两个主要目标将日光层中的冷 ICME 材料与太阳的喷发过程联系起来：(i) 确定 ICME 中丝状材料的普遍程度； (ii) 确定喷发过程中日冕物质抛射等离子体的物理特性，这些特性负责在从日冕进入日光层的途中保存或消除灯丝材料。 密歇根电离代码 (MIC) 将用于预测灯丝中的电荷态演化，以便：(i) 研究喷发过程中较高电荷态的形成和低电荷态离子的存活； (ii) 重建喷发细丝的能量学，包括等离子体从发射到凝固点的温度、密度和速度演化。 因此，该项目的成果预计将对太阳日光层界，特别是 SHINE 具有巨大价值。