磁拱

在磁拱底部非线性等离子体密度波传播期间，损失锥分布的反射电子驱动着电子回旋maser不稳定性的增长，激励出二次谐频波模，支配着太阳射电毫秒Spike辐射。

The reflected electrons of a loss-cone distribution can drive the electron cyclotron maser instability when a nonlinear density wave travells through the bottom part of the magnetic loop . The maser instability will excite the second harmonic O-mode and X-mode to dominate the solar radio millisecond spike radiation .

日蚀观测太阳微波射电源的磁拱结构

Solar eclipse observations of a magnetic loop structure at wavelengths 2,3.2,8.2 and 21 cm

磁拱的运动学无力场

Kinematical Force-Free Fields of a Magnetic Arch

孤立磁拱的约束平衡位形

Confined equilibrium configuration of isolated magnetic arch

我们发现，尽管在所有事例中，灾变能阈都超过了其对应部分开放场的能量，但是灾变能阈的大小与磁绳磁通和中心磁拱的开放程度有关。

We find that the threshold depends on the magnetic fluxes of the flux rope and the extent to which the central arcade is open , though the catastrophic energy threshold is larger than that of the corresponding partly open field in all cases .