A study of the peak frequency of the geosynchronous spectrum in a nonuniform source

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	A study of the peak frequency of the geosynchronous spectrum in a nonuniform source
	Zhou, A. H.1; Li, J. P.1; Wang, X. D.2
刊名	SOLAR PHYSICS
	2008
卷号	247 期号:1 页码:63-75
关键词	radio emission theory
ISSN号	0038-0938
英文摘要	This paper investigates in detail the peak frequency of gyrosynchrotron radiation spectrum with self and gyroresonance absorption for a model of nonuniform magnetic field. It is found that the peak frequency shifts from lower frequency to higher frequency with increases in the low-energy cutoff, number density, input depth of energetic electrons, magnetic field strength and viewing angle. When the number density and temperature of thermal electrons increase, the peak frequency also shifts to a slightly higher frequency. However, the peak frequency is independent of the energy spectral index, high-energy cutoff of energetic electrons and the height of the radio source's upper boundary. It is also found for the first time that there is a good linear correlation between the logarithms of the peak frequency and the low-energy cutoff, number density, input depth of energetic electrons, magnetic field strength, and viewing angle, respectively. Their correlation coefficients are higher than 0.95 and the standard errors are less than 0.06.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SOLAR MICROWAVE-BURSTS ; GYRO-SYNCHROTRON EMISSION ; MAGNETIC DIPOLE FIELD ; GYROSYNCHROTRON RADIATION ; NONTHERMAL ELECTRONS ; SELF-ABSORPTION ; DENSITY ; FLARES ; DISTRIBUTIONS ; ENERGY
收录类别	SCI
语种	英语
WOS记录号	WOS:000252476300006
公开日期	2011-12-29
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/1885]
专题	紫金山天文台_太阳高能及相关物理过程研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Hohai Univ, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Zhou, A. H.,Li, J. P.,Wang, X. D.. A study of the peak frequency of the geosynchronous spectrum in a nonuniform source[J]. SOLAR PHYSICS,2008,247(1):63-75.
APA	Zhou, A. H.,Li, J. P.,&Wang, X. D..(2008).A study of the peak frequency of the geosynchronous spectrum in a nonuniform source.SOLAR PHYSICS,247(1),63-75.
MLA	Zhou, A. H.,et al."A study of the peak frequency of the geosynchronous spectrum in a nonuniform source".SOLAR PHYSICS 247.1(2008):63-75.