Coronal hole boundaries and their interactions with adjacent regions

被引:25
作者
Fisk, LA [1 ]
Zurbuchen, TH [1 ]
Schwadron, NA [1 ]
机构
[1] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA
关键词
coronal holes; solar wind; Ulysses;
D O I
10.1023/A:1005153730158
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Coronal hole boundaries are the interfaces between regions where the coronal magnetic field contains a significant component which is open into the heliosphere and regions where the field is primarily closed. It is pointed out that there are constraints on the magnetic field which opens into the heliosphere that must be satisfied in the corona: it must come into pressure equilibrium in the high corona. and the component of the held which connects to the polar regions of the Sun must differentially rotate. A model is presented in which satisfying these constraints determines which field lines are open and which are closed, and thus where the polar coronal hole boundaries occur. Some of the consequences of this model are discussed.
引用
收藏
页码:43 / 54
页数:12
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