arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1612.01784astro-ph.SRphysics.space-ph
收藏

日冕激波与耀斑电流片碰撞引起的II型射电爆发的破巷

The Broken Lane of a Type II Radio Burst Caused by Collision of a Coronal Shock with a Flare Current Sheet

Guannan Gao, Min Wang, Ning Wu, Jun Lin, E. Ebenezer, Baolin Tan

摘要:

我们研究了2012年11月13日观测到的一次具有破碎通道结构的米制II型太阳射电爆发。除了无线电数据,我们还研究了其他波长的数据。爆发与两个CME和两个耀斑,起源于活动区AR 11613。第一个CME中形成了一个长的电流片,第二个CME首先与电流片碰撞,然后与第一个电流片合并。结合多波长数据所揭示的信息表明,日冕冲击占II型射电爆发,而这个冲击与电流片的碰撞导致了II型射电爆发的破碎车道。在冲击通过当前片之后,II型破裂通道恢复。我们进一步根据II型爆发通道上的间隙估计了电流片的厚度,发现这一结果与以往不同仪器在不同波长下观测到的各种事件的结果一致。此外,还研究了与第一次CME/耀斑相关的规则II型爆发,并从不同的角度进一步推导了两次II型爆发各源区的磁场。

英文摘要:

We investigated a peculiar metric type II solar radio burst with a broken lane structure, which was observed on November 13, 2012. In addition to the radio data, we also studied the data in the other wavelengths. The bursts were associated with two CMEs and two flares that originated from active region AR 11613. A long current sheet was developed in the first CME, and the second CME collided with the current sheet first and then merged with the first one. Combing information revealed by the multi-wavelength data indicated that a coronal shock accounting for the type II radio burst, and that the collision of this shock with the current sheet resulted in the broken lane of the type II radio burst. The type II burst lane resumed after the shock passed through the current sheet. We further estimated the thickness of the current sheet according to the gap on the lane of the type II burst, and found that the result is consistent with previous ones obtained for various events observed in different wavelengths by different instruments. In addition, the regular type II burst associated with the first CME/flare was also studied, and the magnetic field in each source region of the two type II bursts was further deduced in different way.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑