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太阳高能粒子观测特征经向分布统计

钱天麒 丁留贯 周坤论 王智伟 朱聪

钱天麒, 丁留贯, 周坤论, 王智伟, 朱聪. 太阳高能粒子观测特征经向分布统计[J]. 空间科学学报, 2021, 41(3): 355-367. doi: 10.11728/cjss2021.03.355
引用本文: 钱天麒, 丁留贯, 周坤论, 王智伟, 朱聪. 太阳高能粒子观测特征经向分布统计[J]. 空间科学学报, 2021, 41(3): 355-367. doi: 10.11728/cjss2021.03.355
QIAN Tianqi, DING Liuguan, ZHOU Kunlun, WANG Zhiwei, ZHU Cong. Statistical Research on the Longitudinal Distribution of Detected Properties of Solar Energetic Particles[J]. Journal of Space Science, 2021, 41(3): 355-367. doi: 10.11728/cjss2021.03.355
Citation: QIAN Tianqi, DING Liuguan, ZHOU Kunlun, WANG Zhiwei, ZHU Cong. Statistical Research on the Longitudinal Distribution of Detected Properties of Solar Energetic Particles[J]. Journal of Space Science, 2021, 41(3): 355-367. doi: 10.11728/cjss2021.03.355

太阳高能粒子观测特征经向分布统计

doi: 10.11728/cjss2021.03.355
基金项目: 

国家自然科学基金天文联合基金项目(U1731105),江苏省基础研究计划面上项目(BK20171456),中国科学院暗物质与空间天文重点实验室开放课题和国家重点研发计划项目(2018YFC1407304,2018YFF01013706)共同资助

详细信息
    作者简介:

    丁留贯,E-mail:dlg@nuist.edu.cn

  • 中图分类号: P353

Statistical Research on the Longitudinal Distribution of Detected Properties of Solar Energetic Particles

  • 摘要: 基于多卫星联合观测数据,筛选了2006年12月至2017年10月期间122个太阳高能粒子(SEP)事件及其伴随的日冕物质抛射(CME),分析了SEP事件属性随相对经度的变化、与CME属性之间相关性的经向分布以及与Fe/O比值的关联.研究结果显示:低Fe/O类事件的峰值通量Ip通常更高,伴随CME更大,但通量上升速度较慢,且其Du(持续时间)和Ip与CME速度呈现更强的相关性;SEP特征时间TO(CME爆发至SEP事件爆发)与TR(SEP事件爆发至半峰值)随相对经度增加而增大,DuIp随相对经度增加而减小,通量上升斜率K在±90°范围内自东向西递减;SEP事件属性与伴随CME属性的相关性随相对经度的改变有明显变化,在磁连接好的位置,TO与CME速度等属性呈现负相关,TR与CME速度等属性呈现正相关,DuIp与CME速度之间的相关性更强.研究结果进一步表明,SEP事件观测属性既与CME参数相关,同时又具有很强的经度依赖性,在磁连接越好的位置卫星观测到的SEP事件强度越高,SEP观测参数受CME的影响越大,这对大型SEP事件的预报很有意义.此外,高Fe/O类SEP事件与CME相关性的减弱暗示了耀斑加速、种子粒子源等因素的影响.

     

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出版历程
  • 收稿日期:  2020-05-19
  • 修回日期:  2021-02-07
  • 刊出日期:  2021-05-15

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