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Where do flare ribbons stop?

ISSN号：1001-6538
期刊名称：科学通报(英文版)
时间：2012.4.4
页码：1393-1396
分类：P315[天文地球—地震学;天文地球—固体地球物理学;天文地球—地球物理学] TS712[轻工技术与工程—制浆造纸工程]
作者机构：[1]Indian Institute of Astrophysics, Bangalore-560 034, India, [2]Department of Physics, Indian Institute of Technology (BHU), Varanasi-221005, India, [3]Center of Excellence in Space Sciences, IISER Kolkata 741246, India, [4]Centre for Mathematical Plasma Astrophysics, Department of Mathematics, KU Leuven,Celestijnenlaan 200B, B-3001 Leuven, Belgium, [5]School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China, [6]Key Lab of Modem Astronomy and Astrophysics, Nanjing University, Nanjing 210093, China, [7]School of Space Research, Kyung Hee University, Yongin, Gyeonggi-Do, 446-701, Korea
相关基金：support from KU Leuven via GOA/2009-009;support from the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office(IAP P7/08 Charm);supported by the Chinese foundations2011CB811402;the National Natural Science Foundation of China(Grant Nos.11025314,10933003 and 10673004)
相关项目：太阳活动在不同层次的特征和耦合

作者： Chen PengFei|Su JiangTao|Guo Yang|Deng YuanYong|

关键词：地震学, 扭结, 观测, MHD, 灯丝, 环形, 阻尼时间, 振荡网络, Sun： oscillations -- Sun： magnetic fields -- Sun： filament

中文摘要：

我们在由国家太阳的天文台(NSO )/Global 摆动网络组(铜锣) 管理的仪器在 H 观察了的一根太阳的细丝报导并且分析全球纽结摆动的观察证据。在活跃区域(AR ) 的 M1.1 班闪光 11692 在 2013 3 月 15 日上发生了并且在向 AR 11692 的西南躺的细丝导致了一个全球纽结模式。我们在选择在并且在细丝顶附近的三垂直的片的位置发现大约 6167 分钟的时期和 92117 分钟的抑制时间。我们发现波浪被抑制。从用反响的吸收的理论的全球纽结模式和抑制 timescale 的观察时期，我们执行突起地震学。我们为在乘细丝剖面图的半径的 0.340.44 附近的不同类长度规模估计更低的截止价值。

英文摘要：

We report and analyze observational evidence of global kink oscillations in a solar filament as observed in Ha by instruments administered by National Solar Observatory （NSO）/Global Oscillation Network Group （GONG）. An M1.1-class flare in active region （AR） 11692 occurred on 2013 March 15 and induced a global kink mode in the filament lying towards the southwest of AR 11692. We find periods of about 61-67 minutes and damping times of 92-117 minutes at positions of three ver- tical slices chosen in and around the filament apex. We find that the waves are damped. From the observed period of the global kink mode and damping timescale using the theory of resonant absorption, we perform prominence seismology. We estimate a lower cut-off value for the inhomogeneity length scale to be around 0.34-0.44 times the radius of the filament cross-section.

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