Collaborative Research: SHINE--Magnetic Energy Release During Solar Eruptions - From Large to Small Scales

这个为期3年的SHINE项目旨在全面了解太阳大气中磁重联点的小尺度物理过程与更大尺度太阳喷发演化之间的物理联系。因此，该项目有可能大大提高对太阳爆发中能量释放过程的认识。特别是，该项目将探索电流片区域外流形式的小规模能量释放与耀斑结构中热能的大规模输运之间的关系。综合建模工作将为未来更复杂、全三维（3-D）太阳喷发模拟的发展奠定基础。这项为期3年的研究计划整合了两套完善的、最先进的磁流体动力学（MHD）模拟：一套模拟太阳耀斑的大尺度结构和演化，而另一套模拟目标是在小尺度上重联电流片区域及其周围的详细动力学。大尺度耀斑模拟将为重连区域详细的全三维模拟建立背景和初始条件。详细的小规模三维模拟的输出反过来将提供反馈和更新大规模模拟，以评估小规模能量释放过程的后果。模拟结果将与极紫外（EUV）和x射线观测结果进行比较，以测试和提高我们对能量释放和从小尺度到大尺度转换过程的理解。我们将研究各种与能量释放过程密切相关的观察到的、但理解得很少的现象，并将其与模型输出进行比较，包括超拱廊向下流动和其他快速等离子体流出，耀斑环上方的电流片状结构，以及热环顶的EUV/ x射线源。提高对太阳爆发起源的认识，对于理解实现《国家空间天气战略和行动计划》目标所需的基础科学至关重要。《国家空间天气战略和行动计划》旨在开发预测空间天气和减轻其影响的工具。项目团队将通过CfA的本科生太阳物理研究经验（REU）项目让学生参与SHINE研究。这些学生来自各种各样的背景，包括传统上在科学领域代表性不足的群体。因此，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。

This 3-year SHINE project is aimed at gaining a comprehensive understanding of the physical connection between small-scale physical processes at magnetic reconnection sites in the solar atmosphere and the evolution of solar eruptions at greater scales. This, the project has the potential to significantly advance knowledge of the energy release process in solar eruptions. In particular, the project will explore the relationship between small-scale energy release in the form of outflows in the current sheet region and the large-scale transport of thermal energy in the flare structure. The integrated modeling efforts will form the basis of the development of a more sophisticated, full three-dimensional (3-D) simulation of solar eruptions in the future.The 3-year research program integrates two sets of well-developed, state-of-the-art magnetohydrodynamics (MHD) simulations: one simulation models the large-scale structure and evolution of solar flares, whereas the other simulation targets detailed dynamics in and around the reconnection current sheet region at small scales. The large-scale flare simulation will be used to set up the context and initial conditions for the detailed full 3-D simulation of the reconnection region. The outputs of the detailed small scale 3-D simulation, in turn, will provide feedback and update the large-scale simulation to evaluate the consequences of small-scale energy release processes. The modeling results will be compared with extreme ultraviolet (EUV) and X-ray observations to test and improve our understanding of the energy release and conversion processes from small to large scales. A variety of well observed, but poorly understood phenomena that are closely tied to the energy release processes will be investigated and compared to model outputs, including supra-arcade down-flows and other fast plasma outflows, current-sheet like structures above flare loops, and hot loop-top EUV/X-ray sources.The improved knowledge on the origin of solar eruptions is critical to understand basic science needed to meet the goals of the National Space Weather Strategy and Action Plan, which aims to develop tools to forecast space weather and mitigate its impacts. The project team will involve students in this SHINE research through the established CfA's Solar Physics Research Experiences for Undergraduates (REU) program. These students come from a wide variety of backgrounds, including traditionally underrepresented groups in the sciences. Thus, the research and EPO agenda of this project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.