Three-dimensional MHD simulation of the lunar wake

被引：0
|
作者：
XIE LiangHai [1 ,2 ]
LI Lei [1 ]
ZHANG YiTeng [1 ]
Darren Lee De ZEEUW [3 ]
机构：
[1] Center for Space Science and Applied Research,Chinese Academy of Sciences
[2] Graduate University of Chinese Academy of Sciences
[3] Center for Space Environment Modeling,University of Michigan,Ann Arbor,Michigan 48109-2143,USA
来源：
Science China(Earth Sciences) | 2013年 / 56卷 / 02期
基金：
中国国家自然科学基金;
关键词：
lunar wake; MHD simulation; solar wind;
D O I：
暂无
中图分类号：
P184 [月球];
学科分类号：
070401 ;
摘要：
We study the interaction between the Moon and the solar wind through a three-dimensional MHD simulation.Three cases have been discussed in which the interplanetary magnetic field lies at 90,180,and 135 to the solar wind flow,respectively.A wake with low density and low pressure can always be formed behind the Moon.The plasma temperature and magnetic field are enhanced in the central wake,but the field strength is reduced in the surrounding region.A Mach cone is formed by rarefaction waves emanating from the limb.These rarefaction waves propagate via the fast magnetosonic mode with different velocities in different directions relative to the magnetic field.When the interplanetary magnetic field is not parallel to the solar wind flow,the wake shows some asymmetries,with an acceleration region turning up at the center.Finally,the results are compared with the observations by WIND spacecraft.Our calculations agree reasonably well with the observed values.
引用
收藏
页码：330 / 338
页数：9
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