Structure and collapse of three-dimensional magnetic neutral points
作者:
C.E. Parnell,
T. Neukirch,
J.M. Smith,
E.R. Priest,
期刊:
Geophysical & Astrophysical Fluid Dynamics
(Taylor Available online 1997)
卷期:
Volume 84,
issue 3-4
页码: 245-271
ISSN:0309-1929
年代: 1997
DOI:10.1080/03091929708208979
出版商: Taylor & Francis Group
关键词: Magnetic neutral points;magnetic reconnection
数据来源: Taylor
摘要:
The structure and collapse of linear three-dimensional magnetic neutral points is studied by varying the four parameters (p, q,j|,j⊥) that define, in general, the linear field of a neutral point. The effect of these parameters on both the skeleton structure (i.e. the fan and spine) and the actual field line structure of the null is considered. It is found that one current component (j⊥) causes the skeleton structure of the null to fold up from its potential state, whereas the other current component (j|;) causes the field lines to bend. The two other parameters (p,q) determine the potential structure of the null and cause the null to transform from a three-dimensional null to a two-dimensional null and from a positive (type B) null to a negative (type A) null.
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