The north-south asymmetry of solar filaments separately at low and high latitudes in solar cycle 23

We present the results of a study on the north-south asymmetry of solar filaments at low（〈50°） and high（〉60°） latitudes using daily filament numbers from January 1998 to November 2008（solar cycle 23）. It is found that the northern hemisphere is dominant at low latitudes for cycle 23. However, a simi...

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Bibliographic Details
Published in:Research in astronomy and astrophysics 2015, Vol.15 (1), p.77-84
Main Authors: Kong, De-Fang, Qu, Zhi-Ning, Guo, Qiao-Ling
Format: Article
Language:English
Subjects:
Astronomy
Asymmetry
Drift
Filaments
Latitude
Magnetic fields
Solar cycles
Solar interior
不对称性
低纬度地区
北半球
太阳周期
太阳活动周期
太阳能
细丝
高纬度地区
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Summary:We present the results of a study on the north-south asymmetry of solar filaments at low（〈50°） and high（〉60°） latitudes using daily filament numbers from January 1998 to November 2008（solar cycle 23）. It is found that the northern hemisphere is dominant at low latitudes for cycle 23. However, a similar asymmetry does not occur for solar filaments at high latitudes. The present study indicates that the hemispheric asymmetry of solar filaments at high latitudes in a cycle appears to have little connection with that at low latitudes. Our results support that the observed magnetic fields at high latitudes include two components： one comes from the emergence of the magnetic fields from the solar interior and the other comes from the drift of the magnetic activity at low latitudes.
ISSN:1674-4527
2397-6209
DOI:10.1088/1674-4527/15/1/008