SHINE: Plasma Instabilities in Post-Eruption Solar Corona, Formation of Plasmoids and Supra-Arcade Downflows

SHINE：喷发后日冕中的等离子体不稳定性、等离子体团的形成和超拱廊下流

• 批准号: 1460169
• 负责人: Yi-Min Huang
• 金额: $ 35.7万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-05-15 至 2018-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1460169&HistoricalAwards=false
• 关键词: SHINE; Plasma; Instabilities; Post; Eruption

This 3-year SHINE project is aimed at studying plasma instabilities in the solar corona during coronal mass ejections by means to 3-D numerical simulations in realistic coronal configurations. Although the emphasis of this project is on solar physics, the research outcome has broader implications for the Earth's magnetotail, dayside magnetopause, fusion plasmas, and astrophysics. The research will be carried out at the newly established Princeton Center for Heliospheric Physics, which promotes interdisciplinary and international collaborations between basic plasma physicists and solar observers. These collaborations are pursued in synergy with the Max-Planck/Princeton Center for Plasma Physics, which is funded jointly by the NSF, DoE, Max Planck Institute, and Princeton University. This research project will involve a graduate student and a female postdoctoral fellow, and it will contribute to the training of scientists with backgrounds in both solar observations and numerical modeling. Some aspects of the research program are tightly coupled to the academic program in plasma physics at Princeton University, and there will be a new course in space and astrophysical plasma physics to be taught at the Department of Astrophysical Sciences by the Co-PI. The research and EPO agenda of this project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.The main goal of this SHINE project is to investigate the cause of current sheet broadening and the physical origin of supra-arcade downflows (SADs) during a coronal mass ejection (CME). The three major tasks of this project are to investigate: (1) the role of plasmoid instabilities in producing turbulent reconnection in line-tied coronal current sheets, and the role such turbulence plays in the observed broadening of current sheets; (2) the role of secondary Rayleigh-Taylor type instabilities in reconnection exhaust regions in producing the observed characteristics of SADs; and, (3) the formation of plasmoids and SADs during a CME. One important aspect of this project is to foster cross-comparison, verification, and validation between simulations and solar observations. One of the major goals is to establish the capability of capturing coronal eruption, plasmoid formation, and SADs within a single simulation. The results of this project are expected to further advance our understanding in how the magnetic energy is stored and released in large-scale systems such as the solar corona.

这个为期三年的“闪耀”项目旨在通过在实际日冕结构中进行三维数值模拟，研究日冕物质抛射期间日冕中的等离子体不稳定性。 虽然该项目的重点是太阳物理学，但研究成果对地球的磁尾，昼侧磁层顶，聚变等离子体和天体物理学具有更广泛的影响。 这项研究将在新成立的普林斯顿日光层物理中心进行，该中心促进基础等离子体物理学家和太阳观测者之间的跨学科和国际合作。 这些合作是与马克斯-普朗克/普林斯顿等离子体物理中心协同进行的，该中心由美国国家科学基金会、美国能源部、马克斯-普朗克研究所和普林斯顿大学共同资助。 该研究项目将涉及一名研究生和一名女博士后研究员，它将有助于培训具有太阳观测和数值建模背景的科学家。 研究计划的某些方面与普林斯顿大学等离子体物理学的学术计划紧密相连，将有一门新的空间和天体物理等离子体物理学课程由Co-PI在天体物理科学系教授。 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项目的主要目标是调查日冕物质抛射（CME）期间电流片加宽的原因和超拱廊下行流（SAD）的物理起源。 本项目的三个主要任务是：（1）等离子体团不稳定性在产生线状束缚日冕电流片湍流重联中的作用，以及这种湍流在观测到的电流片加宽中的作用：（2）重联排气区的次级Rayleigh-Taylor型不稳定性在产生SAD观测特征中的作用;（3）在CME过程中形成的类质团和SAD。 该项目的一个重要方面是促进模拟和太阳观测之间的交叉比较，验证和验证。 其中一个主要目标是建立一个单一的模拟捕捉日冕喷发，等离子体团形成，和SAD的能力。 该项目的结果有望进一步推进我们对磁能如何在太阳日冕等大规模系统中储存和释放的理解。