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Measuring three-dimensional shapes of stable solar prominences using stereoscopic observations from SDO and STEREO
Zhou CR(周承瑞)1,2; Xia, Chun1,3; Shen YD(申远灯)2
Source PublicationAstronomy and Astrophysics
2021-03-01
Volume647
DOI10.1051/0004-6361/202039558
Contribution Rank第2完成单位
Indexed BySCI ; EI
KeywordSun: filaments prominences Sun: UV radiation techniques: spectroscopic
Abstract

Aims. Although the real shapes and trajectories of erupting solar prominences in three dimensions have been intensively studied, the three-dimensional (3D) shapes of stable prominences before eruptions have not been measured accurately so far. We intend to make such a measurement to constrain 3D prominence models and to extend our knowledge of prominences. Methods. Using multiperspective observations from the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory (SDO) and the Extreme Ultraviolet Imager on board the Solar Terrestrial Relations Observatory (STEREO), we reconstructed 3D coordinates of three stable prominences: a quiescent, an intermediate, and a mixed type. Based on the 3D coordinates, we measured the height, length, and inclination angle of the legs of these prominences. To study the spatial relationship between the footpoints of prominences and photospheric magnetic structures, we also used the Global Oscillation Network Group Hα images and magnetograms from the Helioseismic and Magnetic Imager on board the SDO. Results. In three stable prominences, we find that the axes of the prominence legs are inclined by 68 ± 6° on average to the solar surface. Legs at different locations along a prominence axis have different heights with a two- to threefold difference. Our investigation suggests that over 96% of prominence footpoints in a sample of 70 footpoints are located at supergranular boundaries. The widths of two legs have similar values measured in two orthogonal lines of sight. We also find that a prominence leg above the solar limb showed horizontal oscillations with larger amplitudes at higher locations. Conclusions. With a limited image resolution and number of cases, our measurement suggests that the legs of prominences may have various orientations and do not always stand vertically on the surface of the sun. Moreover, the locations of prominence legs are closely related to supergranules.

Funding ProjectNational Natural Science Foundation of China[11803031] ; National Natural Science Foundation of China[11922307] ; National Natural Science Foundation of China[11773068] ; Basic Research Program of Yunnan Province[2019FB140] ; Basic Research Program of Yunnan Province[202001AW070011] ; Science & Technology Department of Yunnan Province - Yunnan University Joint Funding[2019FY003005]
Funding OrganizationNational Natural Science Foundation of China[11803031, 11922307, 11773068] ; Basic Research Program of Yunnan Province[2019FB140, 202001AW070011] ; Science & Technology Department of Yunnan Province - Yunnan University Joint Funding[2019FY003005]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学 ; 太阳与太阳系其他学科
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
WOS IDWOS:000630014200005
EI Accession Number20211210124981
EI KeywordsStereo image processing
EI Classification Number723.2 Data Processing and Image Processing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24200
Collection选址与日冕观测组
Corresponding AuthorXia, Chun
Affiliation1.School of Physics and Astronomy, Yunnan University, Kunming, 650500, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China
3.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhou CR,Xia, Chun,Shen YD. Measuring three-dimensional shapes of stable solar prominences using stereoscopic observations from SDO and STEREO[J]. Astronomy and Astrophysics,2021,647.
APA Zhou CR,Xia, Chun,&Shen YD.(2021).Measuring three-dimensional shapes of stable solar prominences using stereoscopic observations from SDO and STEREO.Astronomy and Astrophysics,647.
MLA Zhou CR,et al."Measuring three-dimensional shapes of stable solar prominences using stereoscopic observations from SDO and STEREO".Astronomy and Astrophysics 647(2021).
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