The Origins and Implications of Solar Flare and CME-Related Magnetic Field Changes

太阳耀斑和日冕物质抛射相关磁场变化的起源和影响

• 批准号: 1249150
• 负责人: Yan LI
• 金额: $ 43.91万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-15 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1249150&HistoricalAwards=false
• 关键词: Origins; Implications; Solar; Flare; CME

The Principal Investigator (PI) and her team will study the causes and consequences of flare-associated magnetic changes (FAMCs) on the Sun by using a combination of modeling and data analysis. The team will analyze the output of magnetohydrodynamic (MHD) simulations of coronal mass ejections (CMEs) to investigate how magnetic restructuring in the modeled solar corona affects the magnetic field at the base of the simulation domain. In order to better understand the heliospheric consequences of FAMCs, the PI and her team will investigate correlations of observed FAMCs with the speeds, masses, and momenta of observed CMEs, as well as any correlations of the properties of FAMCs and CMEs in their simulations. To investigate how effectively FAMCs can drive "sunquakes," the team will use different parameterizations derived from satellite observations and their simulations, in order to initialize MHD models of the convecting solar interior and to characterize the Sun's acoustic response to realistic sunquake impulses. The PI expects that this study of solar magnetic eruptions will help develop the necessary understanding and tools to improve our prediction capability for the strong space weather events that can adversely affect our technology-based society. She will deliver her team's new data sets to the research community, including her observational analysis and MHD simulation data, through her institute's web site. The PI notes that community accessibility to this project's data and modeling results will provide scientists and students additional tools to perform space weather research. Meanwhile, the PI's team will promote teaching, training, and learning while advancing discovery and scientific understanding by serving students at the University of California at Berkeley. The PI's team has experience supervising student researchers, and they plan to attract and recruit highly qualified undergraduate and graduate students from the Physics, Astronomy, and Planetary Science Departments at Berkeley, while enhancing infrastructure for research and education.

首席研究员（PI）和她的团队将通过结合建模和数据分析来研究太阳耀斑相关磁场变化（FAMCs）的原因和后果。该团队将分析日冕物质抛射（CME）的磁流体动力学（MHD）模拟的输出，以研究模拟太阳日冕中的磁重组如何影响模拟域底部的磁场。为了更好地理解FAMCs的日光层后果，PI和她的团队将研究观测到的FAMCs与观测到的CME的速度，质量和动量的相关性，以及FAMCs和CME特性的任何相关性。为了研究FAMC如何有效地驱动“日震”，研究小组将使用来自卫星观测及其模拟的不同参数化，以初始化对流太阳内部的MHD模型，并表征太阳对现实日震脉冲的声学响应。PI预计，这项对太阳磁爆发的研究将有助于发展必要的理解和工具，以提高我们对强烈空间天气事件的预测能力，这些事件可能会对我们的技术社会产生不利影响。她将通过她的研究所的网站向研究界提供她的团队的新数据集，包括她的观察分析和MHD模拟数据。PI指出，社区对该项目数据和建模结果的可访问性将为科学家和学生提供额外的工具来进行空间天气研究。同时，PI的团队将促进教学，培训和学习，同时通过为加州大学伯克利分校的学生提供服务来推进发现和科学理解。PI的团队有监督学生研究人员的经验，他们计划从伯克利的物理，天文学和行星科学系吸引和招募高素质的本科生和研究生，同时加强研究和教育的基础设施。

项目成果

WHY IS THE GREAT SOLAR ACTIVE REGION 12192 FLARE-RICH BUT CME-POOR?

• DOI: 10.1088/2041-8205/804/2/l28
• 发表时间: 2015-02
• 期刊: The Astrophysical Journal Letters
• 作者: Xudong Sun;M. Bobra;J. Hoeksema;Yang Liu;Yan Li;C. Shen;S. Couvidat;A. Norton;G. Fisher