Coronal Magnetic Arcades with a Helical Structure

被引：0
|
作者：
Mikhalyaev, B. B. [1 ]
Mankaeva, G. A. [1 ]
Solov'ev, A. A. [2 ]
机构：
[1] Kalmyk State Univ, Elista, Russia
[2] Russian Acad Sci, Cent Astron Pulkovo Observ, St Petersburg 196140, Russia
来源：
GEOMAGNETISM AND AERONOMY | 2012年 / 52卷 / 07期
关键词：
SOLAR PROMINENCES; SOURCE MODEL; ERUPTION; FLARES;
D O I：
10.1134/S0016793212070146
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A family of force-free magnetic fields, describing multipolar magnetic arcades is described. The family allows for twisted magnetic ropes, where magnetic field lines have a helical shape. These helical structures are specific to filament channels of active regions. In their structure, arcades belong to normal-polarity fields and correspond to prominences of active regions according to available observational data. A potential field is found that is external with respect to an arcade. The constructed force-free fields can be used to further develop the MHD model of filaments that takes into account the gas pressure gradient and gravity. DOI: 10.1134/S0016793212070146
引用
收藏
页码：861 / 866
页数：6
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