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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
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Volume843Issue:1
AbstractLight 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.
SubtypeArticle
KeywordSun: Chromosphere Sun: Photosphere Sun: Uv Radiation Sunspots
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationESA ; 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
WOS KeywordDYNAMICS-OBSERVATORY SDO ; PLASMA EJECTIONS ; FLUX EMERGENCE ; BRIDGE
Indexed BySCI
Language英语
Funding OrganizationESA ; 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000404731200006
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8820
Collection太阳物理研究部
Affiliation1.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
Recommended Citation
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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