Study of the correlations between SEP peak intensity with CME speed and source location by the simulation of statistical observation and their comparison method
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摘要:
对于多个具有共同特性粒子事件,采用一种统计的数值模拟方法,即将观测事件根据几个指标进行分类排序,并通过寻找每一分组的中值作为特征值,然后将上百个事件转化为几个特征事件进行数值模拟,缩短了数值模拟时间,同时得以考察观测内在的物理规律.并运用此方法对太阳高能粒子峰值强度分别与日冕物质抛射速度以及位置之间的相关性做了研究,最后得出与观测结果相一致的结论.该方法是数值模拟与观测分析研究的最佳结合,弥补了观测结果无法拆分开来考察单因素对事件影响的缺陷,同时也减少了对大量单个事件数值模拟的次数.
For the multiple SEP events with common characteristics,we summarize a statistical simulation method proposed in the previous work.The observation events are classified and sorted according to several indicators,and with the method of picking out the median value of each group as the typical value,hundreds of events are refined into several characteristic events to simulation.Thus,the numerical simulation time is simplified,and single variable can be controlled and its influence on the researched quantity can be investigated.We used this method to study the correlation between SEP peak intensity with the CME speed and the longitude position,and the corresponding conclusions were obtained by comparing observational ata analysis.This method makes up for the defects that the effect of a single factor on the event is always incapable by the observation analysis.It also simplifies the numerical simulations number of the multiple individual events.The method is a good combination of numerical simulation and observation analysis.
作者:
祁诗阳 秦刚
Qi Shiyang;Qin Gang(National Space Science Center,Chinese Academy of Science,Beijing 100190,China;College of Earth Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
机构地区:
中国科学院国家空间科学中心 中国科学院大学地球科学学院
出处:
《betway官方app 学报：自然科学版》 CAS 北大核心 2019年第1期11-16,57,共7页
基金:
国家自然科学基金(NNSFC 41574172)
关键词:
太阳高能粒子 日冕物质抛射 数值模拟 多卫星观测
Solar energetic particle coronal mass ejections numerical simulation multi-spacecraft observations
分类号:
P353 [天文地球—空间物理学]
