Sigmoidal morphology and eruptive solar activity

被引：461

作者：

Canfield, RC ^{[1
]}

Hudson, HS

Mckenzie, DE

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] Solar Phys Res Corp, Tucson, AZ USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 1999年 / 26卷 / 06期

关键词：

D O I：

10.1029/1999GL900105

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Soft X-ray images of solar active regions frequently show S- or inverse-S (sigmoidal) morphology. We have studied the Yohkoh Soft S-Ray Telescope video movie for 1993 and 1997. We have classified active regions according to morphology (sigmoidal or non-sigmoidal) and nature of activity (eruptive or non-eruptive). As well, we have used NOAA sunspot areas for each region as a measure of size. We find that regions are significantly more likely to Le eruptive if they are either sigmoidal or large.

引用

页码：627 / 630

页数：4