A low-mode dynamo with meridional circulation and dipolar symmetry of the magnetic field

被引：5
|
作者：
Popova, E. P. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Moscow 119899, Russia
来源：
ASTRONOMY REPORTS | 2012年 / 56卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
Astronomy Report; Celestial Body; Meridional Circulation; Solar Dynamo; POLOIDAL Magnetic Field;
D O I：
10.1134/S1063772912100046
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A dynamic system for the Parker dynamo including meridional circulation that is applicable to astrophysical objects is constructed. The meridional circulation is able to control the regimes for the generation of magnetic fields. If the meridional flows are weak, regimes with steady oscillations, dynamo bursts, fluctuations, and chaotic components are possible. When the meridional circulation is strengthened, the range of dynamo numbers required for fluctuations and dynamo bursts is reduced, and gradually vanishes; at the same time, the range required for oscillations is increased and raised to higher dynamo numbers. The latitude-time distributions of the toroidal and poloidal magnetic fields for steady oscillations are presented.
引用
收藏
页码：784 / 789
页数：6
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