On the causes of the observed magnetic field imbalance in solar active regions

被引:0
作者
I. V. Oreshina
B. V. Somov
机构
[1] Sternberg Astronomical Institute,
[2] Moscow State University,undefined
来源
Astronomy Letters | 2006年 / 32卷
关键词
96.60.-j; 96.60.Hv; Sun; magnetic fields; imbalance; flares;
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学科分类号
摘要
Based on a topological magnetic field model for active region (AR) 8086 observed on September 15–21, 1997, we calculate the evolution of the magnetic flux imbalance during its disk passage. We have established possible causes of the observed imbalance. Using model ARs produced by perfectly balanced magnetic field sources as examples, we show that even in this case, the observed imbalance can reach a significant value, depending on the AR size and location. The peculiar properties of the magnetic field imbalance in ARs predicted by the topological model must be taken into account when present-day magnetographic observations of the Sun are interpreted.
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页码:787 / 793
页数:6
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