Magneto-acoustic oscillations observed in a solar plage region
文献类型：期刊论文
| 作者 | Ji, Haisheng4,5; Hashim, Parida3,4; Hong, Zhenxiang4; Xu, Zhe4; Shen, Jinhua3 ; Ji, Kaifan2; Cao, Wenda1
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2021-08-01 |
| 卷号 | 21期号:7页码:13 |
| 关键词 | Sun photosphere Sun magnetic field Sun helioseismology |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/21/7/179 |
| 通讯作者 | Shen, Jinhua(jihs@pmo.ac.cn) |
| 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. |
| 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 China[11790302] ; National Natural Science Foundation of China[11729301] ; National Natural Science Foundation of China[11773061] ; National Natural Science Foundation of China[11773072] ; National Natural Science Foundation of China[11873027] ; NJIT ; US 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 |
| WOS记录号 | WOS:000691269600001 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 资助机构 | National Natural Science Foundation of China ; NJIT ; US NSF ; Korea Astronomy and Space Science Institute ; Seoul National University ; KLSA-CAS ; Operation, Maintenance and Upgrading Fund of CAS |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4257]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Shen, Jinhua |
| 作者单位 | 1.Big Bear Solar Observ, 40386 North Shore Lane, Big Bear City, CA 92231 USA 2.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Ununqi 830011, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, DMSA, Nanjing 210023, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100871, Peoples R China |
| 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):13. |
| 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),13. |
| MLA | Ji, Haisheng,et al."Magneto-acoustic oscillations observed in a solar plage region".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.7(2021):13. |
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