Magneto-acoustic oscillations observed in a solar plage region
文献类型:期刊论文
作者 | Ji, Haisheng2,3; Hashim, Parida3,4; Hong, Zhenxiang3; Xu, Zhe3; Shen, Jinhua4; Ji KF(季凯帆)1; Cao, Wenda5 |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
出版日期 | 2021-08 |
卷号 | 21期号:7 |
ISSN号 | 1674-4527 |
关键词 | Sun photosphere Sun magnetic field Sun helioseismology |
DOI | 10.1088/1674-4527/21/7/179 |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | We gave an extensive study for the quasi-periodic perturbations on the time profiles of the line of sight (LOS) magnetic field in 10 x 10 sub-areas in a solar plage region (corresponds to a facula on the photosphere). The perturbations are found to be associated with the enhancement of He I 10830 angstrom absorption in a moss region, which is connected to loops with million-degree plasma. FFT analysis to the perturbations gives a kind of spectrum similar to that of Doppler velocity: a number of discrete periods around 5 minutes. The amplitudes of the magnetic perturbations are found to be proportional to magnetic field strength over these sub-areas. In addition, magnetic perturbations lag behind a quarter of the cycle in the phase with respect to the p-mode Doppler velocity. We show that the relationships can be well explained with an MHD solution for the magneto-acoustic oscillations in high-beta plasma. Observational analysis also shows that, for the two regions with the stronger and weaker magnetic field, the perturbations are always anti-phased. All findings show that the magnetic perturbations are actually magneto-acoustic oscillations on the solar surface, the photosphere, powered by p-mode oscillations. The findings may provide a new diagnostic tool for exploring the relationship between magneto-acoustic oscillations and the heating of the solar upper atmosphere, as well as their role in helioseismology. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA |
WOS关键词 | P-MODES ; MAGNETIC-FIELD ; MAGNETOHYDRODYNAMIC WAVES ; TRANSITION-REGION ; ABSORPTION ; FLUX ; PROPAGATION ; PHOTOSPHERE ; TELESCOPE ; FLUCTUATIONS |
资助项目 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11790302] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11729301] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11773061] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11773072] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11873027] ; NJIT ; US NSFNational Science Foundation (NSF)[AGS-1821294] ; Korea Astronomy and Space Science Institute ; Seoul National University ; KLSA-CAS ; Operation, Maintenance and Upgrading Fund of CAS ; [2017XBQNXZ-A-007] ; [AFOSR-FA9550-19-1-0040] ; [NASA-80NSSC20K0025] |
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:000691269600001 |
资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11790302, 11729301, 11773061, 11773072, 11873027] ; NJIT ; US NSFNational Science Foundation (NSF)[AGS-1821294] ; Korea Astronomy and Space Science Institute ; Seoul National University ; KLSA-CAS ; Operation, Maintenance and Upgrading Fund of CAS ; [2017XBQNXZ-A-007] ; [AFOSR-FA9550-19-1-0040] ; [NASA-80NSSC20K0025] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24555] |
专题 | 云南天文台_丽江天文观测站(南方基地) 天文技术实验室 |
通讯作者 | Shen, Jinhua |
作者单位 | 1.Yunnan Observatories, CAS, Kunming 650216, China; 2.University of the Chinese Academy of Sciences, Beijing 100871, China; 3.Purple Mountain Observatory, DMSA/CAS, Nanjing 210023, China; 4.Xinjiang Astronomical Observatory, CAS, Urumqi 830011, China; 5.Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 922314, USA |
推荐引用方式 GB/T 7714 | Ji, Haisheng,Hashim, Parida,Hong, Zhenxiang,et al. Magneto-acoustic oscillations observed in a solar plage region[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(7). |
APA | Ji, Haisheng.,Hashim, Parida.,Hong, Zhenxiang.,Xu, Zhe.,Shen, Jinhua.,...&Cao, Wenda.(2021).Magneto-acoustic oscillations observed in a solar plage region.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(7). |
MLA | Ji, Haisheng,et al."Magneto-acoustic oscillations observed in a solar plage region".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.7(2021). |
入库方式: OAI收割
来源:云南天文台
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