标题： 太阳磁场浮现与日冕磁拱相互作用导致的太阳等离子体爆发的仿真研究 显示英文标题

标题： Simulation Study of Solar Plasma Eruptions Caused by Interactions between Emerging Flux and Coronal Arcade Fields

摘要： 我们研究了太阳大气中由于浮现磁场与日冕磁拱相互作用而触发等离子体爆发的机制，使用了二维磁流体力学模拟。 我们针对磁拱的高度、磁场强度和浮现磁场的位置进行了参数调查。 我们的结果显示存在两种可能的机制，并且哪种机制占主导地位主要取决于浮现磁场的位置。 当浮现磁场的位置靠近磁拱的极性反转线（PIL）时，第一种机制就会出现。 正如先前研究所指出的，这种机制需要浮现磁场与磁拱之间的重新连接。 第二种机制则出现在浮现磁场位于磁拱边缘附近时。 这种机制不需要浮现磁场与磁拱之间发生重新连接，但确实要求在PIL之上的磁拱内发生重新连接。 此外，我们发现可以用一个简单的公式来表示这一机制的爆发条件。 显示英文摘要

摘要： We investigate the triggering mechanisms of plasma eruptions in the solar atmosphere due to interactions between emerging flux and coronal arcade fields by using two-dimensional MHD simulations. We perform parameter surveys with respect to arcade field height, magnetic field strength, and emerging flux location. Our results show that two possible mechanisms exist, and which mechanism is dominant depends mostly on emerging flux location. One mechanism appears when the location of emerging flux is close to the polarity inversion line (PIL) of an arcade field. This mechanism requires reconnection between the emerging flux and the arcade field, as pointed out by previous studies. The other mechanism appears when the location of emerging flux is around the edge of an arcade field. This mechanism does not require reconnection between the emerging flux and the arcade field but does demand reconnection in the arcade field above the PIL. Furthermore, we found that the eruptive condition for this mechanism can be represented by a simple formula.