Frequency dependence of solar flare occurrence rates-inferred from power-law distribution

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

	Frequency dependence of solar flare occurrence rates-inferred from power-law distribution
	Song, Qiwu1,2,3 ; Huang, Guangli 1,2; Huang, Yu1,2
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2013-09-01
卷号	347 期号:1 页码:15-19
关键词	Flares Radio radiation Statistics
ISSN号	0004-640X
通讯作者	Huang, GL (reprint author), Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China. Email: glhuang@pmo.ac.cn
英文摘要	Based on the frequency dependence of the power-law distribution of the peak fluxes in 486 radio bursts in 1-35 GHz observed by Nobeyama Radio Polarimeters (see Song et al. in Astrophys. J. 750:160, 2012), we have first suggested in this paper that the events with power-law behaviors may be emitted from the optically-thin regions, which can be considered as a good measure for the flare energy release. This result is supported by that both the power-law and optical-thin events gradually increase with radio frequencies, which are well fitted by a power-law function with similar indices of 0.48 and 0.80, respectively. Moreover, a flare occurrence rate is newly defined by the power-law event number in per unit frequency. Its values in lower frequencies are evidently larger than those in higher frequencies, which just imply that most flares are trigged in higher corona. Hence, the frequency variation of power-law event number may indicate different energy dissipation rates on different coronal heights.
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]	EMISSION ; BURSTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000322576100002
公开日期	2014-01-08
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/9961]
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, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Song, Qiwu,Huang, Guangli,Huang, Yu. Frequency dependence of solar flare occurrence rates-inferred from power-law distribution[J]. ASTROPHYSICS AND SPACE SCIENCE,2013,347(1):15-19.
APA	Song, Qiwu,Huang, Guangli,&Huang, Yu.(2013).Frequency dependence of solar flare occurrence rates-inferred from power-law distribution.ASTROPHYSICS AND SPACE SCIENCE,347(1),15-19.
MLA	Song, Qiwu,et al."Frequency dependence of solar flare occurrence rates-inferred from power-law distribution".ASTROPHYSICS AND SPACE SCIENCE 347.1(2013):15-19.