Helicity detection of astrophysical magnetic fields from radio emission statistics

被引：19
|
作者：
Volegova, A. A. [1 ]
Stepanov, R. A. [1 ]
机构：
[1] Inst Continuous Media Mech, Perm 614013, Russia
来源：
JETP LETTERS | 2010年 / 90卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
DYNAMO;
D O I：
10.1134/S0021364009220019
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The inverse problem of the detection of the helical properties of a turbulent magnetic field using integral observation statistics is discussed. A principal solution that sets the relation between the values of magnetic helicity and the level of correlation between the Faraday rotation measure and the polarization degree of radio synchrotron emission has been presented. The effect of depolarization plays the main role in this problem and allows for the detection of magnetic helicity for a certain frequency range of observable radio emissions. The proposed method is mainly sensitive to the large-scale magnetic field component.
引用
收藏
页码：637 / 641
页数：5
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