揭示太阳耀斑中的质量转移：来自嫦娥二号太阳X射线监测器观测到的元素丰度演化的见解
Unveiling Mass Transfer in Solar Flares: Insights from Elemental Abundance Evolutions Observed by Chang'E-2 Solar X-ray Monitor
AI总结：
本文利用嫦娥二号太阳X射线监测器数据，首次揭示耀斑中Fe的逆第一电离势效应并发现罕见的丰度耗尽现象，基于CSHKP模型结合惯性效应解释了FIP与IFIP效应的形成机制。
摘要：
理解太阳耀斑期间元素丰度如何演化，有助于阐明太阳不同大气层之间的质量和能量转移。然而，以往的研究大多集中于平均丰度或特定耀斑相位，在探索整个耀斑过程的全面观测方面留下了空白。因此，这一领域的研究相对稀少。利用嫦娥二号月球轨道器获得的太阳X射线监测器数据，我们展示了对活动区AR 11149和11158中耀斑的两次综合性软X射线光谱观测，展示了不同条件下的元素丰度演化。我们的发现首次揭示了耀斑期间Fe的逆第一电离势（IFIP）效应，并再次证实了Si的该效应存在。此外，我们观测到一种罕见的元素丰度耗尽现象，标志着耀斑衰减阶段的第二次IFIP效应。我们的研究提供了一个基于CSHKP模型的解释，以阐明耀斑动力学中FIP和IFIP效应两者的形成机制，其中惯性效应被纳入ponderomotive力分馏模型中。
英文摘要：
Understanding how elemental abundances evolve during solar flares helps shed light on the mass and energy transfer between different solar atmospheric layers. However, prior studies have mostly concentrated on averaged abundances or specific flare phases, leaving a gap in exploring the comprehensive observations throughout the entire flare process. Consequently, investigations into this area are relatively scarce. Exploiting the Solar X-ray Monitor data obtained from the Chang'E-2 lunar orbiter, we present two comprehensive soft X-ray spectroscopic observations of flares in active regions, AR 11149 and 11158, demonstrating elemental abundance evolutions under different conditions. Our findings unveil the inverse first ionization potential (IFIP) effect during flares for Fe for the first time, and reaffirm its existence for Si. Additionally, we observed a rare depletion of elemental abundances, marking the second IFIP effect in flare decay phases. Our study offers a CSHKP model-based interpretation to elucidate the formation of both the FIP and IFIP effects in flare dynamics, with the inertia effect being incorporated into the ponderomotive force fractionation model.
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。
