NAOC Open IR  > 太阳物理研究部
Sunspot Light Walls Suppressed by Nearby Brightenings
Yang, Shuhong1,2; Zhang, Jun1,2; Erdelyi, Robertus3,4; Hou, Yijun1,2; Li, Xiaohong1,2; Yan, Limei5
2017-07-01
发表期刊ASTROPHYSICAL JOURNAL LETTERS
卷号843期号:1
摘要Light walls, as ensembles of oscillating bright structures rooted in sunspot light bridges, have not been well studied, although they are important for understanding sunspot properties. Using the Interface Region Imaging Spectrograph and Solar Dynamics Observatory observations, here we study the evolution of two oscillating light walls each within its own active region (AR). The emission of each light wall decays greatly after the appearance of adjacent brightenings. For the first light wall, rooted within AR 12565, the average height, amplitude, and oscillation period significantly decrease from 3.5 Mm, 1.7 Mm, and 8.5 minutes to 1.6 Mm, 0.4 Mm, and 3.0 minutes, respectively. For the second light wall, rooted within AR 12597, the mean height, amplitude, and oscillation period of the light wall decrease from 2.1 Mm, 0.5 Mm, and 3.0 minutes to 1.5 Mm, 0.2 Mm, and 2.1 minutes, respectively. Particularly, a part of the second light wall even becomes invisible after the influence of a nearby brightening. These results reveal that the light walls are suppressed by nearby brightenings. Considering the complex magnetic topology in light bridges, we conjecture that the fading of light walls may be caused by a drop in the magnetic pressure, where the flux is canceled by magnetic reconnection at the site of the nearby brightening. Another hypothesis is that the wall fading is due to the suppression of driver source (p-mode oscillation), resulting from the nearby avalanche of downward particles along reconnected brightening loops.
文章类型Article
关键词Sun: Chromosphere Sun: Photosphere Sun: Uv Radiation Sunspots
WOS标题词Science & Technology ; Physical Sciences
资助者ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; STFC (UK) ; Royal Society ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11533008 ; 11373004) ; 11373004) ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; STFC (UK) ; Royal Society ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11533008 ; 11373004) ; 11373004)
DOI10.3847/2041-8213/aa7b2c
关键词[WOS]DYNAMICS-OBSERVATORY SDO ; PLASMA EJECTIONS ; FLUX EMERGENCE ; BRIDGE
收录类别SCI
语种英语
资助者ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; STFC (UK) ; Royal Society ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11533008 ; 11373004) ; 11373004) ; ESA ; ESA ; Norwegian Space Centre ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; STFC (UK) ; Royal Society ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11533008 ; 11373004) ; 11373004)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000404731200006
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8820
专题太阳物理研究部
作者单位1.Chinese Acad Sci, CAS Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China
3.Univ Sheffield, Sch Math & Stat, Solar Phys & Space Plasma Res Ctr, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England
4.Eotvos Lorand Univ, Dept Astron, POB 32, H-1518 Budapest, Hungary
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
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GB/T 7714
Yang, Shuhong,Zhang, Jun,Erdelyi, Robertus,et al. Sunspot Light Walls Suppressed by Nearby Brightenings[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,843(1).
APA Yang, Shuhong,Zhang, Jun,Erdelyi, Robertus,Hou, Yijun,Li, Xiaohong,&Yan, Limei.(2017).Sunspot Light Walls Suppressed by Nearby Brightenings.ASTROPHYSICAL JOURNAL LETTERS,843(1).
MLA Yang, Shuhong,et al."Sunspot Light Walls Suppressed by Nearby Brightenings".ASTROPHYSICAL JOURNAL LETTERS 843.1(2017).
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