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Observational evidence of unwinding and chirality changing in penumbral filaments by Hinode

Published online by Cambridge University Press:  18 July 2013

Jiangtao Su  and
Yu Liu
Jiangtao Su
Affiliation:
Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China email: sjt@bao.ac.cn State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190
Yu Liu
Affiliation:
National Astronomical Observatories, Yunnan observatory, Chinese Academy of Sciences
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Abstract

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In this paper, we study twisting motions of the penumbral filaments of active region NOAA 10930. At first, they made unwinding motions. After unwinding, the filaments are found to twist again and developed the opposite chirality in them. These observational results indicate that penumbral filaments are more inclined to be the twisted magnetic flux tubes in nature.

Keywords

Sun: PhotosphereSun: FilamentsSun: Magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 565 - 566
Copyright
Copyright © International Astronomical Union 2013 

References

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