论文标题
最大24周期的突出点爆发失败
Failed prominence eruptions near 24 cycle maximum
论文作者
论文摘要
我们分析了从2013年5月到2014年7月，观察到接近24太阳周期的16次失败的细丝爆发。我们计算出细丝的初始位置上方的电晕中的潜在磁场分布，以研究其高度依赖性。在七个事件中，衰减指数$ n $的垂直轮廓是单调的。其他九个事件发生在带有折返或类似鞍状N- profiles的区域中。相对于在初始灯丝位置的方向相对，鞍座底部附近的水平场的方向转向超过100 $^\ circ $，这揭示了这些区域中带有空点的四极磁构型。爆发的细丝停止在零点上方的零点上方。可以终止细丝上升并平衡洛伦兹力量的最合理的力似乎是重力。
We analyze 16 failed filament eruptions observed near 24 solar cycle maximum from May 2013 to July 2014. No significant rotation of filament spines is observed during the ascent in all studied failed eruptions, which does not support kink-instability mechanism of triggering the eruptions. We calculate potential magnetic field distributions in the corona above the initial locations of the filaments to study their height dependence. In seven events, the vertical profiles of the decay index $n$ are monotonic. The other nine events occur in the regions with the switchback or saddle-like n-profiles. The direction of the horizontal field near the saddle bottom is turned through more than 100$^\circ$ relative its direction at the initial filament position, which reveals the quadrupolar magnetic configuration with null points in these regions. The eruptive filaments stop above the null points where the total Lorenz force is directed upward. The most reasonable force that can terminate filament ascending and balance the Lorenz force seems the gravity.
