3He-rich SEP Events Observed by STEREO-A

被引:3
作者
Bucik, R. [1 ]
Mall, U. [1 ]
Korth, A. [1 ]
Mason, G. M.
Gomez-Herrero, R.
机构
[1] Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany
来源
PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL SOLAR WIND CONFERENCE (SOLAR WIND 13) | 2013年 / 1539卷
关键词
solar energetic particles; solar flares; corotating interaction regions; ENERGETIC PARTICLE EVENTS; SOLAR; HEAVY; CONNECTION; ABUNDANCES; TELESCOPE; EARTH;
D O I
10.1063/1.4811007
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Using the SIT (Suprathermal Ion Telescope) instrument on STEREO-A we have examined the abundance of the rare isotope He-3 during the rising activity phase of solar cycle 24 between January 2010 and December 2011. We have identified six solar energetic particle (SEP) events with enormous abundance enhancements of He-3 (He-3/He-4 > 1). The events were short lasting, typically similar to 0.5 - 1 day and most of them occurred in association with high-speed solar wind streams and corotating interaction regions. With one exception the events were not associated with similar to 100 keV solar electron intensity increases. The events showed also enhanced NeS/O and Fe/O ratios. The solar images indicate that the events were generally associated with the active regions located near a coronal hole.
引用
收藏
页码:139 / 142
页数:4
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