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三维MHD背景场下太阳高能粒子平均自由程模拟

王尚洁 魏稳稳 刘佑生 朱雨及 沈芳

王尚洁, 魏稳稳, 刘佑生, 朱雨及, 沈芳. 三维MHD背景场下太阳高能粒子平均自由程模拟[J]. 空间科学学报, 2020, 40(6): 980-989. doi: 10.11728/cjss2020.06.980
引用本文: 王尚洁, 魏稳稳, 刘佑生, 朱雨及, 沈芳. 三维MHD背景场下太阳高能粒子平均自由程模拟[J]. 空间科学学报, 2020, 40(6): 980-989. doi: 10.11728/cjss2020.06.980
WANG Shangjie, WEI Wenwen, LIU Yousheng, ZHU Yuji, SHEN Fang. Simulation of Mean Free Path of Solar Energetic Particles in Three-dimensional MHD Background[J]. Journal of Space Science, 2020, 40(6): 980-989. doi: 10.11728/cjss2020.06.980
Citation: WANG Shangjie, WEI Wenwen, LIU Yousheng, ZHU Yuji, SHEN Fang. Simulation of Mean Free Path of Solar Energetic Particles in Three-dimensional MHD Background[J]. Journal of Space Science, 2020, 40(6): 980-989. doi: 10.11728/cjss2020.06.980

三维MHD背景场下太阳高能粒子平均自由程模拟

doi: 10.11728/cjss2020.06.980
基金项目: 

国家自然科学基金项目资助(41774184,41874202)

详细信息
    作者简介:

    王尚洁,E-mail:estherwang427@163.com

    通讯作者:

    沈芳,E-mail:fshen@spaceweather.ac.cn

  • 中图分类号: P353

Simulation of Mean Free Path of Solar Energetic Particles in Three-dimensional MHD Background

  • 摘要: 太阳高能粒子(SEP)的平均自由程是研究SEP传播的重要参数,由SEP的物理性质和太阳风物理性质决定.使用MHD-SEP模型对三维MHD背景场下的平均自由程进行了探讨,利用该模型具有可提供接近物理真实的太阳风背景场的优势,对SEP的平均自由程进行了定性分析.分别对太阳活动高年和低年选取2个卡林顿周进行模拟,定性分析其空间变化,并研究平均自由程与径向太阳风速度的相关性.结果表明:该方法得到的平均自由程空间分布与以往研究得到的关于平均自由程的结论相吻合,可以用来定性确立平行平均自由程;该模型可以反映不同事件中平行平均自由程分布的不同特征;表现了平均自由程与径向太阳风速度有很好的负相关关系.结果可为未来缓变SEP平均自由程研究作参考.

     

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出版历程
  • 收稿日期:  2019-04-08
  • 修回日期:  2020-08-12
  • 刊出日期:  2020-11-15

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