AI 中文总结
该研究利用 SDO 上 AIA 数据，观测连续 M 级和 C 级耀斑激发日冕环的晃动振荡。识别出十五个振荡事件，提取振荡特性，估计环长度，发现耀斑强度影响振荡特征，还研究了参数间相互依赖性并结合慢波理论讨论结果。
AI 中文摘要
在过去二十年中，热日冕环中的慢磁声波一直是备受关注和争议的话题。日冕环内等离子体的周期性来回运动通常由耀斑引发，被称为晃动振荡。在本研究中，我们利用太阳动力学观测台（SDO）上大气成像组件（AIA）的数据，报告了由连续的 M 级和 C 级耀斑激发的日冕环中晃动振荡的前所未有的观测结果。在七个不同的日冕环中识别出总共十五个振荡事件，这为评估耀斑强度对振荡特征的影响提供了难得的机会。基于振荡的外观，其特性主要从 AIA 131 和 94 Å 通道中提取。此外，我们通过假设半圆形几何形状来估计每个环的投影长度。我们的结果表明，从一次耀斑到另一次耀斑，振荡特性有相当大的变化，这表明单个耀斑在塑造局部物理条件方面的作用。根据环长度和振荡周期估计的等离子体温度范围为 9 至 31 MK。此外我们发现，阻尼时间并不总是如先前观察到的那样在较冷的 94 Å 通道中更长。通过结合所有事件获得的结果，我们研究了包括振荡周期、阻尼时间、环长度和等离子体温度在内的各种参数之间的相互依赖性，并在慢波理论的背景下讨论了这些结果。
英文摘要
Slow magnetoacoustic waves in hot coronal loops have remained a topic of considerable interest and debate over the past two decades. The periodic back-and-forth motion of plasma within a coronal loop, often initiated by a flare, is commonly referred to as sloshing oscillation. In the present study, we report unprecedented observations of sloshing oscillations in coronal loops excited by successive M- and C-class flares, using data from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). A total of fifteen oscillation events were identified within seven distinct coronal loops, providing the rare opportunity to evaluate the influence of flare strength on the characteristics of the oscillations. Based on the appearance of the oscillations, their properties were extracted mainly from the AIA 131 and 94 Å channels. Additionally, we estimate the deprojected length of each loop by assuming a semi-circular geometry. Our results indicate considerable changes in the properties of oscillations from one flare to another, suggesting the role of individual flares in shaping the local physical conditions. The plasma temperature estimated from the loop length and oscillation period ranges from 9 to 31 MK. Additionally, we find that the damping times are not always longer in the colder 94 Å channel as previously observed. By combining the results obtained from all events, we study the inter-dependences between various parameters, including oscillation period, damping time, loop length, and plasma temperature, and discuss these results in the context of the theory of slow waves.
