论文标题
首先分析ICME通量绳索中表面Alfvén波的原位观察
First analysis of in-situ observation of surface Alfvén waves in ICME flux rope
论文作者
论文摘要
Alfvén波（AWS）在太空和天体血浆中不可避免。它们在血浆中发生的各种物理过程中的关键作用引发了太阳 - 物理学的激烈研究。仿真研究提出了沿圆柱通量绳表面的AWS产生，称为表面AWS（SAWS）。但是，这种独特波浪的观察性验证迄今难以捉摸。我们报告了对星际冠状质量弹出通量绳中对锯的第一个\ textit {intu}。我们应用Walén测试来识别它们。 Elsasser变量用于估计这些锯的表征。磁通绳的脚点的运动或沿等离子体磁云边界的不稳定性的运动可能会感到兴奋。在这里，表面对齐的磁场中血浆密度或场强的变化可能会触发锯。
Alfvén waves (AWs) are inevitable in space and astrophysical plasma. Their crucial role in various physical processes, occurring in plasma, has triggered intense research in solar-terrestrial physics. Simulation studies have proposed the generation of AWs along the surface of a cylindrical flux rope, referred to as Surface AWs (SAWs); however the observational verification of this distinct wave has been elusive to date. We report the first \textit{in-situ} observation of SAWs in an interplanetary coronal mass ejection flux rope. We apply the Walén test to identify them. The Elsasser variables are used to estimate the characterization of these SAWs. They may be excited by the movement of the flux rope's foot points or by instabilities along the plasma magnetic cloud's boundaries. Here, the change in plasma density or field strength in the surface-aligned magnetic field may trigger SAWs.
