Dipole tilt controls bow shock location and flaring angle

作     者：LU JianYong YUAN HuanZhi WANG Ming YANG YaFen 

作者机构：Institute of Space WeatherCollege of Math & StatisticsNanjing University of Information Science & Technology National Center for Space WeatherChina Meteorological Administration 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2017年第60卷第1期

页      面：198-206页

核心收录：

学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学] 0704[理学-天文学] 

基　　金：supported by the National Basic Research Program of China (Grant No.2012CB825606) the National Natural Science Foundation of China(Grant Nos.41574158,U1631107) the China Meteorological Administration(Grant No.GYHY201106011) 

主　　题：弯吃惊 偶极子倾斜 联合的太阳的风磁气圈 

摘      要：The dipole tilt angle has beenfound to affect Earth s bow *** work presents a quantitative relationship between the dipole tilt angle and the bow shock location and flaring *** collected a large data set of bow shock crossings from four different satellites(IMP 8,Geotail,Magion 4,and Cluster),including some recent crossings obtained during *** results from a statistical analysis demonstrate that:(1)the subsolar standoff distance increases but the flaring angle decreases with increasing dipole tilt angle;(2)when the dipole tilt angle changes sign from negative to positive,the dayside bow shock moves toward Earth and the shift can be as much as 2.29 R_E,during which the flaring angle increases;and(3)the shape of bow shock in the northern and southern hemispheres *** the northern hemisphere bow shock,with increasing positive/negative dipole tilt angle,the flaring angle increases/*** for the southern hemisphere,the trend is the opposite;with increasing positive/negative dipole tilt angle,the flaring angle decreases/*** results are helpful for future bow shock modeling that needs to include the effects of dipole tilt angle.