论文标题
关于CMES从内部到外电晕的体积演变的变化
On the Variation of Volumetric Evolution of CMEs from Inner to Outer Corona
论文作者
论文摘要
在理解冠状质量弹出（CME）的早期演变方面面临的一些主要挑战是由于在内部电晕（$ <\，3 $ r $ _ {\ odot} $）和天空测量平面所致。因此，在这项工作中，我们从基于地面的Coronagraph k-cor的内部冠状壳模型（MLSO）以及Cor cor-1 Onboard-in-solar portar porterrial Mertantertrestrial Masservoration（STEREO）的观察结果以及对cor的观察结果以及对内的观察结果扩展了渐变的圆柱形壳（GCS）模型的应用。我们研究了较低高度的白色光中5 cmes的快速初始加速和宽度膨胀阶段。我们还研究了这些CME在内电晕中建模的体积的演变，并首次报告了CME体积的功率定律依赖性，距离太阳的距离。我们进一步发现了椭圆形前线的体积，圆锥形腿遵循不同的功率定律，从而表明通过CME的差异膨胀。该研究还揭示了CME在内部和外壳中的总体积演化的两个不同的功率定律，从而表明在这些不同高度处的膨胀机制不同。这些结果除了帮助我们当前对CME进化的理解外，还将为CME启动和传播模型提供更好的限制。同样，自从2016年以来立体声-B（以及COR-1B数据）丢失以来，此处介绍的这种修改的GCS模型仍将在内色罗娜（Corona）中启用立体镜检查，以进行白色光线中CME的3D研究。
Some of the major challenges faced in understanding the early evolution of Coronal Mass Ejections (CMEs) are due to limited observations in the inner corona ($<\,3$ R$_{\odot}$) and the plane of sky measurements. In this work, we have thus extended the application of the Graduated Cylindrical Shell (GCS) model to the inner coronal observations from the ground--based coronagraph K--Cor of the Mauna Loa Solar Observatory (MLSO) along with the pair of observations from COR--1 onboard the Solar Terrestrial Relations Observatory (STEREO). We study the rapid initial acceleration and width expansion phase of 5 CMEs in white-light in the lower heights. We also study the evolution of the modelled volume of these CMEs in inner corona and report for the first time, a power law dependence of the CME volume with distance from the Sun. We further find the volume of ellipsoidal leading front and the conical legs follow different power laws, thus indicating differential volume expansion through a CME. The study also reveals two distinct power laws for the total volume evolution of CMEs in the inner and outer corona, thus suggesting different expansion mechanisms at these different heights. These results besides aiding our current understanding on CME evolution, will also provide better constraints to CME initiation and propagation models. Also, since the loss of STEREO-B (and hence COR--1B data) from 2016, this modified GCS model presented here will still enable stereoscopy in the inner corona for the 3D study of CMEs in white-light.
