空间科学学报2017，Vol.37Issue(3)：249-261,13.DOI:10.11728/cjss2017.03.249
X级质子耀斑的特征研究
Research on Characteristics of X-class Solar Proton Flare
摘要
Abstract
Solar Proton Events (SPE) often accompany with solar flares,and the probability that solar proton events triggered by X-class flares is larger than that triggered by other types of flares.In order to improve the forecast accuracy of solar proton events triggered by X-class flares,the relation between proton/non-proton flares and space environmental parameters,including X-ray integrated flux,source region,CME speed,CME angle width,ambient solar wind speed,and ambient Xray flux,are analyzed statistically.The results show that the distributions of X-ray integrated flux,heliolongitude,CME speed,and CME angle width are different for non-proton and proton flares.Non-proton flares are mostly located at eastern part,where X-ray integrated flux is less than 0.3 J·m-2 and CME speed is less than 1300 km·s-1.While proton flares are mostly located at central and western part,where X-ray integrated flux is greater than 0.3 J·m-2 and CME speed is greater than 1300 km·s-1.Furthermore,halo CMEs are often associated with proton flares,while angle width distribution of CMEs that accompanied with non-proton flares is relatively disperse.For proton and non-proton flares,the distribution of their ambient solar wind speed and ambient X-ray flux are similar.According to the different characteristics of the SPEs for proton and non-proton flares,the accuracy of SPE forecast can be improved.关键词
质子耀斑/非质子耀斑/日冕物质抛射Key words
Proton flare/Non-proton flare/Coronal Mass Ejection (CME)分类
天文与地球科学引用本文复制引用
张烨,师立勤,崔延美,刘四清..X级质子耀斑的特征研究[J].空间科学学报,2017,37(3):249-261,13.基金项目
国家自然科学基金项目(11503063)和国家重点基础研究计划项目(2012CB825606)共同资助 （11503063）
