Effects of gyroresonance absorption and self absorption on the gyrosynchrotron radiation spectrum

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳活动的多波段观测研究团组

	Effects of gyroresonance absorption and self absorption on the gyrosynchrotron radiation spectrum
	Zhou, AH ; Su, YN; Huang, GL
刊名	CHINESE PHYSICS LETTERS
	2004-10-01
卷号	21 期号:10 页码:2067-2070
关键词	GYRO-SYNCHROTRON EMISSION MAGNETIC DIPOLE FIELD X-RAY-BURSTS MICROWAVE EXPRESSIONS MODEL
ISSN号	0256-307X
英文摘要	Effects of gyroresonance absorption and self absorption on the gyrosynchrotron radiation spectrum are investigated with a model in a magnetic dipole field. It is found that the gyroresonance absorption and self absorption suppress substantially the gyrosynchrotron radiation at lower frequencies where the radio source is optically thick. The suppression of the gyroresonance absorption on the spectrum increases with the increasing temperature and density of thermal electrons. The suppression of the self absorption on the spectrum increases as increasing number density of the nonthermal electrons. The influences of the gyroresonance absorption and the self one on the spectrum are compared quantitatively. It is shown that only when the number density of the nonthermal electron reaches a higher value of about 3 x 10(4) cm(-3) above 10 keV, can the effect of the self absorption on the spectrum compare with the effect of the gyroresonance absorption.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	GYRO-SYNCHROTRON EMISSION ; MAGNETIC DIPOLE FIELD ; X-RAY-BURSTS ; MICROWAVE ; EXPRESSIONS ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000224453100057
公开日期	2012-12-22
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/7731]
专题	紫金山天文台_太阳活动的多波段观测研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhou, AH,Su, YN,Huang, GL. Effects of gyroresonance absorption and self absorption on the gyrosynchrotron radiation spectrum[J]. CHINESE PHYSICS LETTERS,2004,21(10):2067-2070.
APA	Zhou, AH,Su, YN,&Huang, GL.(2004).Effects of gyroresonance absorption and self absorption on the gyrosynchrotron radiation spectrum.CHINESE PHYSICS LETTERS,21(10),2067-2070.
MLA	Zhou, AH,et al."Effects of gyroresonance absorption and self absorption on the gyrosynchrotron radiation spectrum".CHINESE PHYSICS LETTERS 21.10(2004):2067-2070.