Coronal mass ejections and solar polarity reversal

被引：135

作者：

Gopalswamy, N ^{[1
]}

Lara, A

Yashiro, S

Howard, RA

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA

[3] USN, Res Lab, Washington, DC 20375 USA

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 598卷 / 01期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

Sun : activity; Sun : coronal mass ejections (CMEs); Sun : magnetic fields; Sun : prominences;

D O I：

10.1086/380430

中图分类号：

P1 [天文学];

学科分类号：

0704 [天文学];

摘要：

We report on a close relationship between the solar polarity reversal and the cessation of high-latitude coronal mass ejections (CMEs). This result holds good for individual poles of the Sun for cycles 21 and 23, for which CME data are available. The high-latitude CMEs provide a natural explanation for the disappearance of the polar crown filaments (PCFs) that rush the poles. The PCFs, which are closed field structures, need to be removed before the poles could acquire open field structure of the opposite polarity. Inclusion of CMEs along with the photospheric and subphotospheric processes completes the full set of phenomena to be explained by any solar dynamo theory.

引用

页码：L63 / L66

页数：4

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