Statistical analysis of dynamic fibrils observed from NST/BBSO observations

We present the results obtained from the analysis of dynamic fibrils in NOAA active region （AR） 12132, using high resolution Ha observations from the New Solar Telescope operating at Big Bear Solar Observatory. The dynamic fibrils are seen to be moving up and down, and most of these dynamic fibrils...

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Bibliographic Details
Published in:Research in astronomy and astrophysics 2018-02, Vol.18 (2), p.43-52
Main Authors: Priya, Thambaje Gopalan, Su, Jiang-Tao, Chen, Jie, Deng, Yuan-Yong, Choudhury, Debi Prasad
Format: Article
Language:English
Subjects:
Correlation
Deceleration
Gravitation
Kinetic energy
Shock wave propagation
Shock waves
Statistical analysis
Sun: chromosphere
Sun: magnetic fields
Sun: sunspots-oscillation
Velocity
统计分析
NOAA
高分辨率
持续时间
减速
天文台
望远镜
路径
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Summary:We present the results obtained from the analysis of dynamic fibrils in NOAA active region （AR） 12132, using high resolution Ha observations from the New Solar Telescope operating at Big Bear Solar Observatory. The dynamic fibrils are seen to be moving up and down, and most of these dynamic fibrils are periodic and have a jet-like appearance. We found from our observations that the fibrils follow almost perfect parabolic paths in many cases. A statistical analysis on the properties of the parabolic paths showing an analysis on deceleration, maximum velocity, duration and kinetic energy of these fibrils is presented here. We found the average maximum velocity to be around 15 km s-1 and mean deceleration to be around 100 m s-2. The observed deceleration appears to be a fraction of gravity of the Sun and is not compatible with the path of ballistic motion due to gravity of the Sun. We found a positive correlation between deceleration and maximum velocity. This correlation is consistent with simulations done earlier on magnetoacoustic shock waves propagating upward.
ISSN:1674-4527
2397-6209
DOI:10.1088/1674-4527/18/2/17