宁静日珥磁场结构的观测和数值模拟研究

Solar prominences are one of the most common solar activities. Study of prominences is essential and a key to deeply understand solar flares and coronal mass ejections. As prominence eruption is the main source of space weather, understanding prominence is of great significance for building physics-based models for space weather to precisely predict space weather. Although the magnetic field of prominences dominates the shape, evolution, and eruption of prominences, the models of prominence magnetic structure are still too simple to explain some key phenomena, prominence's pillar feet. This project will combine multi-wavelength multi-viewing-angle observations and data-driven magnetic evolution simulations to analyze actual prominence event and build realistic magnetic models. High-precision three-dimensional magnetic models of prominence will be constructed, including the overall magnetic flux rope and sub-structures to host prominence feet. With the models, we expect to explain prominence pillar feet, reveal the formation of filament channel, understand the evolution of magnetic field from prominence formation to prominence eruption, and pave a solid foundation towards fully understanding solar prominences.

日珥是一种最常见的太阳大气活动现象，研究日珥现象是深刻理解太阳耀斑和日冕物质抛射的基础和钥匙，是研究空间天气起源的基础，对建立空间天气的物理模型和最终实现空间天气的准确预报具有重要的意义。虽然日珥磁场对日珥的形态结构和演化爆发具有重要甚至主导作用，但是日珥的磁场模型还停留在简单模型阶段，无法解释日珥柱状足等关键日珥结构。本课题将结合多波段多角度的观测数据和数据驱动的磁场演化数值模拟，采用多视角三维重构技术和底边界电场驱动日冕磁场演化等先进技术，对日珥实际观测事例进行观测分析和仿真数值建模，得到精确的日珥三维磁场结构及其演化过程，包括整体磁绳结构和产生日珥足的次级磁场结构，解释日珥的柱状足现象，揭示暗条通道的形成过程，理解从日珥形成到爆发过程中磁场结构的演变，为最终全面理解日珥现象打下坚实的基础。

日珥是一种最常见的太阳大气活动现象，研究日珥现象是深刻理解太阳耀斑和日冕物质抛射的基础和钥匙，是研究空间天气起源的基础，对建立空间天气的物理模型和最终实现空间天气的准确预报具有重要的意义。虽然日珥磁场对日珥的形态结构和演化爆发具有重要甚至主导作用，但是日珥的磁场模型还停留在简单模型阶段，无法解释日珥柱状足等关键日珥结构。本课题结合多波段多视角的观测研究和三维磁场和磁流体数值模拟，采用多视角三维重构技术和底边界驱动日冕磁场演化等先进技术，对日珥实际观测事例进行观测分析和仿真数值建模，得到精确的日珥三维磁场结构及其演化过程，包括整体磁绳结构和产生日珥足的次级磁场结构，解释日珥的柱状足现象，揭示了宁静暗条通道的形成过程及超米粒运动在其中发挥的重要作用。