论文标题
同源太阳喷发中的磁通绳的积聚
Buildup of the Magnetic Flux Ropes in Homologous Solar Eruptions
论文作者
论文摘要
同源冠状质量弹出（CME）是一个有趣的现象，可以通过比较在同源物理条件下的多-CME来研究CME的形成。 AR 11283在2011年9月4日出现了双曲铲时存在于太阳能表面上几天。其正极性与属于不同双螺杆的预先存在的负极性相撞，在碰撞极性之间产生了极性反转线（PIL）的复发太阳能活动，即所谓的碰撞PIL（CPIL）（CPIL）。我们的结果表明，以磁通绳（MFR）的形式建立了大量的能量和螺旋，并具有反复释放和积累过程。这些MFR是沿CPIL建立的。采用了一种通量缺陷方法，并表明由于Chintzoglou等人提出的碰撞剪切场景，磁性消除发生在CPIL沿CPIL。取消通量的总金额为$ \ sim $ 0.7 $ \ times $ 10 $^{21} $ mx，不确定性为$ \ sim $ 13.2 $ \％$在30 $^\ circ $ sun-center距离的信心区域内。取消的通量总计为双极磁区域的无符号通量的24 $ \％$。结果表明，CPIL旁边的磁场非常剪切，碰撞后平均剪切角度高于70 $^\ Circ $。 MFRS的扭曲内核和连续喷发活动的快速扩展都是由碰撞剪切过程驱动的。这些结果对于更好地理解与同源太阳喷发相关的MFR的堆积过程很重要。
Homologous coronal mass ejections (CMEs) are an interesting phenomenon, and it is possible to investigate the formation of CMEs by comparing multi-CMEs under a homologous physical condition. AR 11283 had been present on the solar surface for several days when a bipole emerged on 2011 September 4. Its positive polarity collided with the pre-existing negative polarity belonging to a different bipole, producing recurrent solar activities along the polarity inversion line (PIL) between the colliding polarities, namely the so-called collisional PIL (cPIL). Our results show that a large amount of energy and helicity were built up in the form of magnetic flux ropes (MFRs), with recurrent release and accumulation processes. These MFRs were built up along the cPIL. A flux deficit method is adopted and shows that magnetic cancellation happens along the cPIL due to the collisional shearing scenario proposed by Chintzoglou et al. The total amount of canceled flux was $\sim$0.7$\times$10$^{21}$ Mx with an uncertainty of $\sim$13.2$\%$ within the confidence region of the 30$^\circ$ sun-center distance. The canceled flux amounts to 24$\%$ of the total unsigned flux of the bipolar magnetic region. The results show that the magnetic fields beside the cPIL are very sheared, and the average shear angle is above 70$^\circ$ after the collision. The fast expansion of the twist kernels of the MFRs and the continuous eruptive activities are both driven by the collisional shearing process. These results are important for better understanding the buildup process of the MFRs associated with homologous solar eruptions.
