3D numerical experiment for EUV waves caused by flux rope eruption
3D numerical experiment for EUV waves caused by flux rope eruption
复制标题
磁绳喷发引起的 EUV 波的 3D 数值实验
DOI：
10.1093/mnras/staa555
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发表时间：
2020-04
影响因子：
4.8
通讯作者：
Yan Li
中科院分区：
文献类型：
--
作者：
Zhixing Mei;Rony Keppens;Qiangwei Cai;Jing Ye;Xiaoyan Xie;Yan Li
We present a 3D magnetohydrodynamic numerical experiment of an eruptive magnetic flux rope (MFR) and the various types of disturbances it creates, and employ forward modelling of extreme ultraviolet (EUV) observables to directly compare numerical results and observations. In the beginning, the MFR erupts and a fast shock appears as an expanding 3D dome. Under the MFR, a current sheet grows, in which magnetic field lines reconnect to form closed field lines, which become the outermost part of an expanding coronal mass ejection (CME) bubble. In our synthetic SDO/AIA images, we can observe the bright fast shock dome and the hot MFR in the early stages. Between the MFR and the fast shock, a dimming region appears. Later, the MFR expands so its brightness decays and it becomes difficult to identify the boundary of the CME bubble and distinguish it from the bright MFR in synthetic images. Our synthetic images for EUV disturbances observed at the limb support the bimodality interpretation for coronal disturbances. However, images for disturbances propagating on-disc do not support this interpretation because the morphology of the bright MFR does not lead to circular features in the EUV disturbances. At the flanks of the CME bubble, slow shocks, velocity vortices and shock echoes can also be recognized in the velocity distribution. The slow shocks at the flanks of the bubble are associated with a 3D velocity separatrix. These features are found in our high-resolution simulation, but may be hard to observe as shown in the synthetic images.
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影响因子：
2
作者：
Z. Mei;J. Lin
通讯作者：
Z. Mei;J. Lin
太阳喷发引起的中低日冕各类扰动的数值实验
影响因子：
4.8
作者：
Xiaoyan Xie;Jun Lin
通讯作者：
Jun Lin
DOI：
10.1086/519013
发表时间：
2007-04
期刊：
The Astrophysical Journal
影响因子：
--
作者：
M. Wills-Davey;Craig E. DeForest;J. O. Stenflo;J. O. Stenflo
通讯作者：
M. Wills-Davey;Craig E. DeForest;J. O. Stenflo;J. O. Stenflo
DOI：
10.1086/462412
发表时间：
2005-07
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
T. Török;B. Kliem
通讯作者：
T. Török;B. Kliem
影响因子：
6.5
作者：
T. Van Doorsselaere;P. Antolin;K. Karampelas
通讯作者：
T. Van Doorsselaere;P. Antolin;K. Karampelas