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Spatial distributions of sunspot oscillation modes at different temperatures
Wang, Zheng-Kai3; Feng, Song2,3; Deng LH(邓林华)1,2,4; Meng, Yao3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2020
卷号20期号:1页码:6
关键词Sun atmosphere Sun sunspots Sun oscillations
ISSN号1674-4527
DOI10.1088/1674-4527/20/1/6
产权排序第2完成单位
文献子类Article
英文摘要

Three- and five-minute sunspot oscillations have different spatial distributions in the solar atmospheric layers. The spatial distributions are crucial for revealing the physical origin of sunspot oscillations and to investigate their propagation. In this study, six sunspots observed by Solar Dynamics Observatory/Atmospheric Imaging Assembly were used to obtain the spatial distributions of three- and five-minute oscillations. The fast Fourier transform method is applied to represent the power spectra of oscillation modes. We find that, from the temperature minimum to the lower corona, the powers of the five-minute oscillation exhibit a circle-shape distribution around its umbra, and the shapes gradually expand with temperature increase. However, the circle-shape disappears and the powers of the oscillations appear to be very disordered in the higher corona. This indicates that the five-minute oscillation can be suppressed in the high-temperature region. For the three-minute oscillations, from the temperature minimum to the high corona, their powers mostly distribute within an umbra, and part of them are located at the coronal fan loop structures. Moreover, those relative higher powers are mostly concentrated in the position of coronal loop footpoints.

学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
资助项目Key Applied Basic Research Program of Yunnan Province[2018FA035] ; National Natural Science Foundation of China[11761141002] ; National Natural Science Foundation of China[11873089] ; National Natural Science Foundation of China[U1931107] ; Youth Innovation Promotion Association CAS
WOS关键词WAVES
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号WOS:000509310300001
资助机构Key Applied Basic Research Program of Yunnan Province[2018FA035] ; National Natural Science Foundation of China[11761141002, 11873089, U1931107] ; Youth Innovation Promotion Association CAS
内容类型期刊论文
源URL[http://ir.ynao.ac.cn/handle/114a53/22206]  
专题云南天文台_其他
通讯作者Feng, Song
作者单位1.College of Science, China Three Gorges University, Yichang 443002, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
3.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China
4.Chongqing University of Arts and Sciences, Chongqing 402160, China
推荐引用方式
GB/T 7714
Wang, Zheng-Kai,Feng, Song,Deng LH,et al. Spatial distributions of sunspot oscillation modes at different temperatures[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(1):6.
APA Wang, Zheng-Kai,Feng, Song,Deng LH,&Meng, Yao.(2020).Spatial distributions of sunspot oscillation modes at different temperatures.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(1),6.
MLA Wang, Zheng-Kai,et al."Spatial distributions of sunspot oscillation modes at different temperatures".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.1(2020):6.
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