两冕流间物质抛射事件的数值模拟

二维磁流体力学方程数值敢两冕流间的日冕物质抛射事件。为了能重现两冕流间ＣＭＥ的基本特征，本文在加入一定强度的扰动热压的同时，叠加了一个由圆线电流产生的闭合磁场。模拟结果表明，此类扰动能形成明显的高密度等离子体环形结构，且外环后随一暗脸。它们在径向和横向 都存在不同程度的膨胀。

NUMERICAL SIMULATION OF CORONAL MASS EJECTIONS BETWEEN TWO CORONAL STREAMERS

In this paper, simulations of coronal mass ejections between two coronal streamers are conducted based on a two-dimensional MHD equation set. In order tore-appear the general characteristics of the CME, the simulation adds the closemagnetic field caused by a cycle current and the disturbing-pressure. The resultsshow: The disturbance can lead to an obvious plasma loop structure with highdensity and a low-density region behind the outer loop. They produce both radialand transverse expansion in different degree. The results apporoximately conformto the main characteristics of No.80127 CME event.