Dispersion surface and electromagnetic responses of the magnetosonic/whistler mode in the high-beta collisionless plasmas

doi:10.1063/1.5064688

	Dispersion surface and electromagnetic responses of the magnetosonic/whistler mode in the high-beta collisionless plasmas
	Huang, Chaoyan 1; Zhao, Hanqing 1,2; Zhao, Jinsong2 ; Sun, Heyu 2,3; Shi, Chen 1,2; Liu, Zhifeng 2,4
刊名	PHYSICS OF PLASMAS
	2019-02-01
卷号	26 期号:2 页码:14
ISSN号	1070-664X
DOI	10.1063/1.5064688
通讯作者	Zhao, Jinsong(js_zhao@pmo.ac.cn)
英文摘要	Near-parallel and highly oblique magnetosonic/whistler (M/W) mode waves are frequently observed in solar wind and interplanetary shocks. These observed waves are usually analyzed by the plasma kinetic and fluid theories. This study compares the dispersion surface and electromagnetic responses of the M/W mode wave under both kinetic and fluid theories in the plasmas with beta(p) = beta(e) similar or equal to 1 in detail. In comparison with the kinetic theory, it proposes that the hot fluid theory is suitable to obtain the dispersion relation, the ratio of the parallel to perpendicular magnetic fluctuation B-z/B-perpendicular to, and the ratio of the electric to magnetic fluctuation E/B. Except the near-parallel low-frequency M/W mode, the hot fluid theory would be used to calculate the ratio between two magnetic fluctuations perpendicular to the wave vector B-1/B-2, the magnetic helicity sigma, and the ratio of the parallel to perpendicular electric fluctuation E-z/E-perpendicular to of the M/W mode waves. The cold fluid theory is good at describing the magnetic responses including B-z/B-perpendicular to, B-1/B-2, and sigma, but it underestimates omega, E/B, and E-z/E-perpendicular to for the obliquely propagating M/W mode wave. Furthermore, both hot and cold fluid theories can obtain the ratio of the longitudinal to transverse electric fluctuation relative to the wave vector E-L/E-P of the obliquely propagating low-frequency M/W mode. These results provide an indicator about how to choose the adequate theory to analyze the observations of the M/W mode waves in the solar wind and interplanetary shocks. Besides, from the dispersion surface in kinetic theory, it shows that the relative weak damping arises for the low-frequency branch at the angle around 0 degrees, 60 degrees, and 90 degrees and for the high-frequency branch with omega similar to [omega(cp), 300 omega(cp)] at the normal angle smaller than 60 degrees, which indicates the possible angle and frequency of the freely propagating M/W mode waves. Published under license by AIP Publishing.
WOS关键词	LOW-FREQUENCY WAVES ; WHISTLER-MODE ; SHOCK
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000460094400011
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23951]
专题	中国科学院紫金山天文台
通讯作者	Zhao, Jinsong
作者单位	1.Nanjing Univ Aeronaut & Astronaut, Coll Astronaut, Dept Space Sci & Applicat, Nanjing 210016, Jiangsu, Peoples R China 2.Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Inst Space Weather, Sch Math & Stat, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Huang, Chaoyan,Zhao, Hanqing,Zhao, Jinsong,et al. Dispersion surface and electromagnetic responses of the magnetosonic/whistler mode in the high-beta collisionless plasmas[J]. PHYSICS OF PLASMAS,2019,26(2):14.
APA	Huang, Chaoyan,Zhao, Hanqing,Zhao, Jinsong,Sun, Heyu,Shi, Chen,&Liu, Zhifeng.(2019).Dispersion surface and electromagnetic responses of the magnetosonic/whistler mode in the high-beta collisionless plasmas.PHYSICS OF PLASMAS,26(2),14.
MLA	Huang, Chaoyan,et al."Dispersion surface and electromagnetic responses of the magnetosonic/whistler mode in the high-beta collisionless plasmas".PHYSICS OF PLASMAS 26.2(2019):14.