发表机构
Kumaun University; Nanjing University; University of Oslo（库马恩大学; 南京大学; 奥斯陆大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究结合太阳观测与射电数据，证实太阳EUV快模波速度与II型米级射电暴激波速度呈线性相关，指出EIT波非快模波，纠正了将II型射电暴对应EIT波的误导性做法。
AI 中文摘要
太阳极紫外（EUV）波是常伴随日冕物质抛射（CME）出现的、表现为明亮波前的大尺度扰动。根据磁力线拉伸模型，该现象包含两个成分：快模CME活塞驱动的激波，以及较慢的非波成分，它们常与太阳II型射电暴相关。研究预期，射电源与快模EUV波应来自同一激波（即CME活塞驱动激波）的不同部分，且两者速度应存在强相关性。为探究该关系，研究人员结合太阳动力学天文台的高时空分辨率观测数据，与射电太阳望远镜网络的射电数据展开分析。结果显示，EUV快模速度（$v_{euv}$）与II型米级（m）射电暴推导的激波速度（$v_{radio}$）存在线性相关性，关系式为$v_{radio}=0.89v_{euv}+51$ km/s，相关系数为0.77。该强相关性表明，原日冕EIT波的速度约为II型射电暴的三分之一，并非快模波；文献中将II型射电暴对应到EIT波的做法具有误导性。
英文摘要
Solar extreme-ultraviolet (EUV) waves are large-scale disturbances that manifest as bright wavefronts, often during coronal mass ejections (CMEs). According to the magnetic field line stretching model, this phenomenon comprises two components: a fast-mode CME piston-driven shock wave and a slower, nonwave component. They are often associated with solar type II radio bursts. It is expected the radio source and the fast-mode EUV wave should come from different parts of the same shock, i.e., the CME piston-driven shock, and their speeds should be strongly correlated. To investigate this relationship, we utilized high spatiotemporal resolution observations from the Solar Dynamics Observatory in conjunction with radio data from the Radio Solar Telescope Network. Our analysis reveals that there exists a linear correlation between the EUV fast-mode speeds ($v_{euv}$) and the shock speeds derived from metric (m) type II radio bursts ($v_{radio}$), which is $v_{radio}=0.89v_{euv}+51$ kms$^{-1}$, with a correlation coefficient of 0.77. This strong correlation suggests that original coronal EIT waves, which are about three times slower than type II radio bursts, are not fast-mode waves, and it is misleading to map type II radio bursts to EIT waves in the literature.
Comments13 pages, 06 figures, 01 table (accepted for publication in Scientific Reports)
