标题： 大振幅振荡的静止丝状物被极端紫外线波激发 显示英文标题

标题： Large-amplitude Oscillations of a Quiescent Filament Excited by an Extreme-ultravioletWave

摘要： 在本文中，我们对2023年2月17日由极紫外（EUV）波激发的宁静暗条的纵向和横向同时振荡进行了多波长观测。 一个热通道爆发在活动区（AR）NOAA 13229中产生了X2.3级耀斑和快速日冕物质抛射（CME），靠近东侧边缘。 CME驱动了一个EUV波，以约459公里/秒的速度向西传播。 在距离耀斑点约340.3 Mm处到达暗条后，暗条受到扰动并开始大振幅振荡，主要在171{\AA }中观察到。纵向振荡持续了近两个周期。 平均初始振幅、速度、周期和阻尼时间分别为约4.7 Mm、约26.5 km/s、约1099.1秒和约2760.3秒。 根据摆模型，凹陷的曲率半径和最小水平磁场强度估计为6.7-9.9 Mm和4.6-5.6 G。横向振荡持续了2-3个周期。 平均初始振幅、速度、周期和阻尼时间分别为约1.8 Mm、约11.2 km/s、约994.4秒和约3576.2秒。 凹陷的径向磁场强度估计为6.6-7.4 G。 显示英文摘要

摘要： In this paper, we carry out multiwavelength observations of simultaneous longitudinal and transverse oscillations of a quiescent filament excited by an extreme-ultraviolet (EUV) wave on 2023 February 17. A hot channel eruption generates an X2.3 class flare and a fast coronal mass ejection (CME) in active region (AR) NOAA 13229 close to the eastern limb. The CME drives an EUV wave, which propagates westward at a speed of ~459 km s-1. After arriving at the filament ~340.3 Mm away from the flare site, the filament is disturbed and starts large-amplitude oscillations, which are mainly observed in 171 {\AA}.The longitudinal oscillations last for nearly two cycles. The average initial amplitude, velocity, period, and damping time are ~4.7 Mm, ~26.5 km s-1, ~1099.1 s, and ~2760.3 s, respectively. According to the pendulum model, the curvature radius and minimum horizontal magnetic field strength of the dips are estimated to be 6.7-9.9 Mm and 4.6-5.6 G. The transverse oscillations last for 2-3 cycles. The average initial amplitude, velocity, period, and damping time are ~1.8 Mm, ~11.2 km s-1, ~994.4 s, and ~3576.2 s, respectively. The radial magnetic field strength of the dips are estimated to be 6.6-7.4 G.