Collaborative Research: SHINE: Laboratory, Observational, and Modeling Investigations of the Torus Instability and Associated Solar Corona Eruptive Phenomena

合作研究：SHINE：环面不稳定性和相关日冕喷发现象的实验室、观测和建模研究

• 批准号: 1348513
• 负责人: Haimin Wang
• 金额: $ 20.4万
• 依托单位: New Jersey Institute of Technology
• 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: 2014-06-01 至 2017-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1348513&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Laboratory; Observational

This research project will extend understanding of solar corona plasmas beyond what is possible using single approaches, such as just analyzing data, just modeling, or just doing experiments. The cross-checking and discussion of these different approaches will provide a robust means for getting to the heart of the matter and finding out what is really going on. By reconciling first-principle models, experiments, and analysis of observations, there is an excellent prospect of achieving long-sought insights and improved understanding regarding underlying solar eruption mechanisms. This 3-year collaborative SHINE project would yield: (i) improved understanding of solar corona global phenomena since eruptions impact the remainder of the solar corona by shedding magnetic energy, magnetic helicity, and plasma particles; (ii) improved understanding of phenomena associated with eruptions such as energetic particles and electromagnetic radiation spanning from radio waves to gamma rays; (iii) improved understanding of the terrestrial impact of eruptions such as the effects on the magnetosphere and ionosphere, on radio propagation, and on spacecraft; (iv) increased public interest in solar physics, because of the highly visual nature of the experiments, the observations, and the numerical modeling; and, (v) training of students in solar and plasma physics and supporting a young female researcher. 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 3-year collaborative SHINE project is to combine laboratory experiments, analysis of data from actual solar eruptions, and numerical modeling of the fundamental magnetohydrodynamics (MHD). Laboratory plasmas having morphology and dynamics similar to solar plasmas will be studied by at Caltech. This study is feasible because MHD has no intrinsic scale so MHD laboratory plasmas having dimensionless numbers and morphology similar to the solar corona will exhibit similar behavior, but on much different temporal and spatial scales. The analysis of actual solar eruptions and CME kinematics will be performed at the New Jersey Institute of Technology. This analysis will focus on the magnetic field structural properties in and above the source regions of eruptions. The analysis will apply non-linear force-free extrapolations based on magnetogram data obtained from spacecraft, such as Hinode and SDO, so as to calculate the strapping field profile as a function of altitude and core magnetic field. The dependence of CME acceleration profile and final speed on the decay index will be analyzed and compared to the experiments and to the numerical models developed at Predictive Science Inc. The project team will compare numerical predictions to both the laboratory experiments and the solar eruption analysis. This comparison will take into account both the strapping field decay index and morphological changes of erupting flux ropes due to kinking.

这个研究项目将扩展对太阳日冕等离子体的理解，而不仅仅是使用单一的方法，比如仅仅分析数据，仅仅建模，或者仅仅做实验。对这些不同的方法进行交叉检查和讨论，将为深入问题的核心并找出真正发生的事情提供有力的手段。通过协调第一原理模型、实验和观测分析，有很好的前景实现长期寻求的见解和提高对潜在的太阳喷发机制的理解。这个为期3年的SHINE合作项目将产生：(i)提高对日冕全球现象的理解，因为火山爆发通过释放磁能、磁螺旋度和等离子体粒子影响日冕的其余部分；（二）提高对与火山爆发有关的现象的认识，例如高能粒子和从无线电波到伽马射线的电磁辐射；（三）更好地了解火山喷发对地球的影响，例如对磁层和电离层、对无线电传播和对航天器的影响；（iv）由于实验、观测和数值模拟的高度可视化性质，公众对太阳物理学的兴趣增加；（五）对学生进行太阳和等离子体物理方面的培训，并支持一名年轻的女研究员。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。这个为期3年的SHINE合作项目的主要目标是将实验室实验、实际太阳喷发数据分析和基本磁流体动力学（MHD）的数值模拟结合起来。加州理工学院将研究具有类似太阳等离子体形态和动力学的实验室等离子体。这项研究是可行的，因为MHD没有内在尺度，所以MHD实验室等离子体的无因次数和形态与日冕相似，会表现出相似的行为，但在时间和空间尺度上有很大不同。实际的太阳喷发和日冕物质抛射的运动学分析将在新泽西理工学院进行。这一分析将侧重于火山爆发源区域及其上方的磁场结构特性。分析将基于从Hinode和SDO等航天器获得的磁图数据，采用非线性无力外推，从而计算出作为高度和核心磁场函数的捆带场剖面。将分析日冕物质抛射加速剖面和最终速度对衰变指数的依赖关系，并与实验和预测科学公司开发的数值模型进行比较。该项目团队将把数值预测与实验室实验和太阳爆发分析进行比较。这种比较既考虑了带状场衰减指数，也考虑了喷发通量绳因扭结引起的形态变化。