Three-Dimensional Magnetic Configuration and Evolution of Flare Productive Active Regions

耀斑生产活动区的三维磁结构和演化

• 批准号: 0936665
• 负责人: Ju Jing
• 金额: $ 27.8万
• 依托单位: New Jersey Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0936665&HistoricalAwards=false
• 关键词: Three; Dimensional; Magnetic; Configuration; Evolution

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The principal investigator (PI) will study the evolution of coronal magnetic configurations and the corresponding free magnetic energy that is associated with solar explosive phenomena, such as flares and coronal mass ejections (CMEs). She plans to use photospheric vector magnetograms from the Hinode satellite and from the forthcoming Solar Dynamic Observatory (SDO) as boundary conditions for reconstructing the 3D coronal magnetic field. The PI will apply multigrid-like optimization methods to this boundary data to extrapolate the non-linear force-free (NLFF) coronal magnetic field, and ultimately, to quantitatively estimate the free energy and nonpotentiality of the coronal magnetic field.The PI will focus on 3D magnetic configurations, such as magnetic shear, magnetic inclination angle, and the electric current system, while investigating the temporal evolution of free magnetic energy and flare productivity of active regions. She anticipates that this work will reveal the pre-eruption configuration of unstable magnetic structures, shed light on the complexity and energy budget of solar active regions, and help establish the prediction accuracy of specific flare and CME models in community use today.Among other broader impacts, this effort will help improve the mission analysis of data to be obtained from the Helioseismic and Magnetic Imager (HMI) instrument on the upcoming SDO spacecraft. The PI also expects her observational results to enhance the modeling and forecasting of flares and CMEs. This project has a strong education and mentoring component, with the young female PI acting as an advisor and supervisor to Ph.D. students.

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)提供资金的。首席研究员(PI)将研究与耀斑和日冕物质抛射(CME)等太阳爆炸现象有关的日冕磁组态的演变和相应的自由磁能。她计划使用来自Hinode卫星和即将到来的太阳动力学天文台(SDO)的光球层矢量磁图作为重建3D日冕磁场的边界条件。PI将对这些边界数据应用多重网格式优化方法，以外推非线性无力(NLFF)日冕磁场，最终定量估计日冕磁场的自由能和非势性。PI将重点研究三维磁构型，如磁剪切、磁倾角和电流系统，同时研究活动区自由磁能和耀斑生产率的时间演化。她预计，这项工作将揭示不稳定磁结构的喷发前配置，阐明太阳活动区的复杂性和能量收支，并有助于建立目前社区使用的特定耀斑和CME模型的预测精度。在其他更广泛的影响中，这项工作将有助于改进对即将到来的SDO航天器上的太阳地震和磁成像仪(HMI)获得的数据的飞行任务分析。PI还期望她的观测结果能加强耀斑和日冕物质抛射的模拟和预报。这个项目有一个强大的教育和指导部分，年轻的女性PI担任博士生的顾问和导师。