Oscillations of flux tube bundles and the structure of sunspot magnetic fields

被引：8
|
作者：
Nagovitsyna, EY [1 ]
Nagovitsyn, YA [1 ]
机构：
[1] Russian Acad Sci, Pulkovo Observ, St Petersburg 196140, Russia
来源：
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 2001年 / 27卷 / 02期
关键词：
Sun; active regions; magnetic field; oscillations;
D O I：
10.1134/1.1344263
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Observational aspects of the previously found quasi-hourly oscillations of magnetic fragments in sunspot polar coordinates are investigated. The orientation of the oscillations is shown to be azimuthally isotropic, with their amplitude reaching a maximum in penumbra at a distance or similar to0.8 sunspot radius (the maximum amplitude is estimated to be 3700 km). Based on the detected deviations of tho oscillations from the radial direction. we numerically simulate the horizontal configuration of field lines in the region of the major spots in bipolar groups. (C) 2001 MAIK "Nauka/Interperiodica".
引用
收藏
页码：118 / 123
页数：6
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