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
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2020 | |
卷号 | 20期号:1页码:6 |
关键词 | Sun atmosphere Sun sunspots Sun oscillations |
ISSN号 | 1674-4527 |
DOI | 10.1088/1674-4527/20/1/6 |
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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