Magneto-acoustic oscillations observed in a solar plage region

doi:10.1088/1674-4527/21/7/179

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	Magneto-acoustic oscillations observed in a solar plage region
	Ji, Haisheng 1,2; Hashim, Parida 2,3; Hong, Zhenxiang 2; Xu, Zhe 2; Shen, Jinhua 3; Ji, Kaifan 4; Cao, Wenda 5
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	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.
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关键词	P-MODES ; MAGNETIC-FIELD ; MAGNETOHYDRODYNAMIC WAVES ; TRANSITION-REGION ; ABSORPTION ; FLUX ; PROPAGATION ; PHOTOSPHERE ; TELESCOPE ; FLUCTUATIONS
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 China ; NJIT ; US NSF ; Korea Astronomy and Space Science Institute ; Seoul National University ; KLSA-CAS ; Operation, Maintenance and Upgrading Fund of CAS
内容类型	期刊论文
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.Univ Chinese Acad Sci, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, DMSA, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Ununqi 830011, Peoples R China 4.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 5.Big Bear Solar Observ, 40386 North Shore Lane, Big Bear City, CA 92231 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):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.