arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2512.01201astro-ph.SR
收藏

基于数据驱动的辐射磁流体动力学模拟:主动区域11158的出现及X2.2日冕爆的爆发

Data-driven Radiative Magnetohydrodynamics Simulations with the MURaM Code: the Emergence of Active Region 11158 and the X2.2 Flare

School of Astronomy and Space Science, Nanjing University(南京大学天文与空间科学学院);Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education(现代天文学和天体物理学教育部重点实验室(南京大学))

Feng Chen

AI总结:

本文利用MURaM代码的数据驱动分支模拟了活跃区域11158的出现及X2.2日冕爆的爆发,展示了该方法在真实日冕环境研究中的潜力。

摘要:

我们介绍了MURaM代码数据驱动分支应用于广泛研究的爆发产生产动区域11158的应用。我们改进了先前论文中描述的混合模型策略,以建模从2011年2月11日前几天开始的4天内活跃区域的出现以及2月15日X2.2爆发的爆发。经过4天的演变,模拟在实际爆发前约3小时(3%误差)发生主要磁通量绳的爆发。爆发导致磁重联,对色球层和日冕层的总体加热起作用。色球层中爆发能量的沉积导致强烈的凝结和蒸发,填充了热后爆发环和明亮的爆发带,这些带表现出与观测到的带演变相似的分离和扩展。合成的软X射线通量对应于X类,接近实际事件。磁通量绳的向上爆发导致一个由活塞驱动的冲击波和横向扩展,对下层大气产生强烈的向下影响,生成了一个明显快速传播的色球层Moreton波。我们得出结论,该活跃区域的数据驱动辐射模拟能够再现实际爆发的关键观测结果,并展示了该方法在真实日冕环境研究中巨大潜力。

英文摘要:

We present the application of the data-driven branch of the MURaM code to the extensively studied flare-productive active region 11158. We refine the hybrid model strategy, which was described in the earlier paper of this series, to model the emergence of the active region during 4 solar days starting shortly before 2011 February 11 and the eruption of an X2.2 flare on February 15. After 4 days of evolution, a major eruption of a magnetic flux rope occurs in the simulation at approximately 3 hours (3\% difference) before the real flare. The eruption leads to magnetic reconnection that contributes to bulk heating in the chromosphere and corona. The deposition of flare energy in the chromosphere causes strong condensations and evaporations, which fill hot post-flare loops and bright flare ribbons that exhibit separation and extension similar to the observed ribbon evolution. The synthesized soft X-ray flux corresponds to X class, which is close to the real event. The upward eruption of the flux rope leads to a piston-driven shock and horizontal expansion that exerts a strong downward impact on the lower atmosphere and generate an apparently fast-propagating chromospheric Moreton wave. We conclude that the data-driven radiative simulation of this active region can reproduce the key observational results of the real flare and demonstrate the great potential of this method for studying solar eruptions in a realistic corona environment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑