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 1708.04411astro-ph.SR
收藏

太阳活动区的电流中和、磁剪切和喷发活动

Electric-Current Neutralization, Magnetic Shear, and Eruptive Activity in Solar Active Regions

Yang Liu, Xudong Sun, Tibor Török, Viacheslav S. Titov, James E. Leake

摘要:

决定太阳活动区(AR)是否产生强烈耀斑和日冕物质抛射(CME)的物理条件尚未得到很好的理解。在这里,我们调查之间的关联电流中和,沿极性反转线(PILs)的磁剪切,并在四个AR喷发活动;两个新兴的和两个发达的。我们发现,CME产生的AR的特点是由一个强烈的非中和总电流,而在AR的总电流,没有产生CME几乎完全中和。这两组之间的PIL剪切的差异是不太明显,这表明电流中和的程度可能作为一个更好的代理评估的AR产生CME的能力。

英文摘要:

The physical conditions that determine whether or not solar active regions (ARs) produce strong flares and coronal mass ejections (CMEs) are not yet well understood. Here we investigate the association between electric-current neutralization, magnetic shear along polarity inversion lines (PILs), and eruptive activity in four ARs; two emerging and two well-developed ones. We find that the CME-producing ARs are characterized by a strongly non-neutralized total current, while the total current in the ARs that did not produce CMEs is almost perfectly neutralized. The difference in the PIL-shear between these two groups is much less pronounced, which suggests that the degree of current-neutralization may serve as a better proxy for assessing the ability of ARs to produce CMEs.

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。

↑