Current helicity and the small-scale dynamo

被引：2
|
作者：
Gabov, AS [1 ]
Sokoloff, DD [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Res Comp Ctr, Moscow 119992, Russia
来源：
ASTRONOMY REPORTS | 2004年 / 48卷 / 11期
基金：
俄罗斯基础研究基金会; 中国国家自然科学基金;
关键词：
D O I：
10.1134/1.1822977
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The small-scale dynamo inherent to mirror-asymmetric turbulence can generate a magnetic field characterized by substantial mirror asymmetry of the associated electric currents. In general, the corresponding helicity should be taken into account in calculations of the helicity balance, which is now used as a basis for models describing the suppression of the large-scale dynamo. However, the mirror asymmetry of the fluctuating magnetic fields is concentrated on scales much shorter than the magnetic-loop diameter. Therefore, the unaccounted-for contribution to the helicity balance is, in fact, not important. (C) 2004 MAIK "Nauka/Interperiodica".
引用
收藏
页码：949 / 953
页数：5
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