Proton spectrum of the 2005 January 20 solar flare

被引：0
|
作者：
Wang Rui-Guang [1 ]
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2008年 / 32卷 / 02期
关键词：
spectrum; solar energetic particles; ground level enhancements; coronal mass ejections;
D O I：
10.1088/1674-1137/32/2/006
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
An extreme solar cosmic ray event broke out on 2005 January 20. Not only is it the most intensive solar energetic particle (SEP) event, with >100 MeV particles measured by GOES satellite since 1986, but it has been the largest ground level enhancement (GLE) event recorded by the ground-based neutron monitors since 1956. This work presents the solar proton spectra for this event with data obtained by GOES in multiple energy channels. These spectra are well fitted by a modified power-law function. The spectral index of around -1 indicates that the January 20 event has a hard energy spectrum. Possible mechanisms for the acceleration of relativistic protons are discussed.
引用
收藏
页码：104 / 107
页数：4
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