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2009年2月13日EUV波现象数值研究

章磊 郑惠南 廖炽坚

章磊, 郑惠南, 廖炽坚. 2009年2月13日EUV波现象数值研究[J]. 空间科学学报, 2013, 33(1): 6-12. doi: 10.11728/cjss2013.01.006
引用本文: 章磊, 郑惠南, 廖炽坚. 2009年2月13日EUV波现象数值研究[J]. 空间科学学报, 2013, 33(1): 6-12. doi: 10.11728/cjss2013.01.006
Zhang Lei, Zheng Huinan, Liao Chijian. Numerical study of EUV wave on 13 February 2009[J]. Chinese Journal of Space Science, 2013, 33(1): 6-12. doi: 10.11728/cjss2013.01.006
Citation: Zhang Lei, Zheng Huinan, Liao Chijian. Numerical study of EUV wave on 13 February 2009[J]. Chinese Journal of Space Science, 2013, 33(1): 6-12. doi: 10.11728/cjss2013.01.006

2009年2月13日EUV波现象数值研究

doi: 10.11728/cjss2013.01.006
基金项目: 国家自然科学基金项目(41174125,41074120,41131065,41121003)和中国科学院知识创新工程重要方向项目(KZCX2-EW-QN510)共同资助
详细信息
  • 中图分类号: P353

Numerical study of EUV wave on 13 February 2009

  • 摘要: 结合STEREO卫星的观测和三维磁流体力学数值模拟方法, 采用WSO (Wilcox Solar Observatory)磁场数据和势场源表面模型建立日冕初始磁场, 并在日面活动区加上时变的压强扰动, 对2009年2月13日05:35UT爆发的CME-EUV波(Coronal Mass Ejections-Extreme Ultraviolet wave, 日冕物质抛射-远紫外波)事件进行研究. 从COR1/STEREO-A图像判断, 此次CME前沿速度约340km·s-1, 角宽度约60°; 分析EUVI/STEREO-B 195 Å的差分图像, 可以看到, 环形亮环波前从活动区向四周传播, 亮环波前后面是日冕暗化区, 取四个方向的波前位置进行线性拟合可知, 该EUV波速度为247km·s-1, 数值模拟得到的EUV波速度为245km·s-1, 将计算结果采用IDL可视化后可以看到明显的亮环和暗区结构, 数值模拟结果与卫星观测相一致, 表明该EUV波现象是快磁声波.

     

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出版历程
  • 收稿日期:  2011-08-09
  • 修回日期:  2012-09-21
  • 刊出日期:  2013-01-15

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