High-resolution Observations of Dynamics of Superpenumbral Hα Fibrils

被引：6

作者：

Jing, Ju ^{[1
,2
]}

Li, Qin ^{[1
,2
]}

Liu, Chang ^{[1
,2
]}

Lee, Jeongwoo ^{[1
]}

Xu, Yan ^{[1
,2
]}

Cao, Wenda ^{[1
,2
]}

Wang, Haimin ^{[1
,2
]}

机构：

[1] New Jersey Inst Technol, Inst Space Weather Sci, Newark, NJ 07102 USA

[2] New Jersey Inst Technol, Big Bear Solar Observ, 40386 North Shore Lane, Big Bear City, CA 92314 USA

来源：

ASTROPHYSICAL JOURNAL | 2019年 / 880卷 / 02期

基金：

美国国家科学基金会;

关键词：

Sun: atmosphere; Sun: chromosphere; Sun: magnetic fields; MAGNETIC-FLUX TUBES; SIPHON FLOWS; SOLAR SEISMOLOGY; EVERSHED FLOW; FAST EVENTS; WAVES; CHROMOSPHERE; OSCILLATIONS; PHOTOSPHERE; TELESCOPE;

D O I：

10.3847/1538-4357/ab2b44

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present high-resolution Ha observations of a small solar pore in NOAA active region 12661, using the 1.6 m Goode Solar Telescope equipped with high-order adaptive optics at Big Bear Solar Observatory. The observations reveal copious fine-scale chromospheric superpenumbral fibrils (with an average cross-sectional width of similar to 0.'' 17 +/- 0.'' 03), along with associated transit and intermittent flows with apparent speeds of 5-14 km s(-1). Wavelet analysis and the spatio-temporal pattern of superpenumbral fibrils suggest that the observed flows along fibrils are not likely an oscillation/wave phenomenon. Based on our pseudo-Dopplergrams, we suggest that the observed flows may be a phenomenon similar to inverse Evershed flows in the chromosphere. The three-dimensional potential field model indicates that the pore and the surrounding fibrils are enclosed by fan-field lines forming a separatrix dome configuration. Such a magnetically confined configuration may help to maintain the steadfastness of the superpenumbral fibril dynamics.

引用

页数：10

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[4] HIGH-RESOLUTION OBSERVATIONS OF H-ALPHA FLARE REGIONS
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SHARIPOVA, LM
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Choudhary, D. P.
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SHINE, RA
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ALLEN, RJ
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