Magnetic reconnection rate and spectral index for two double-ribbon flares

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

	Magnetic reconnection rate and spectral index for two double-ribbon flares
	Ning, Zongjun
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2008-04-01
卷号	314 期号:1-3 页码:137-143
关键词	sun : flares sun : UV radiation sun : X-rays sun : gamma-rays
ISSN号	0004-640X
英文摘要	We explore the correlations between the inferred reconnection rate and hard X-ray spectral hardness for two double-ribbon flares on 2003 November 1 and 2005 May 17 in this paper. The magnetic reconnection rate of phi(rec) is derived from the time rate of change of the product between the normal magnetic field and the newly brightened ribbon area of TRACE 1600 angstrom observations. And the spectral index of gamma is derived from RHESSI hard X-ray data. Both events show a soft-hard-soft spectral behaviour in the rise-peak-decay phases. An anti-correlated behaviour is found between the time evolution of reconnection rate and spectral index. From the regression analysis, we obtain a negative power-law dependence and quantify the relationship between these two quantities. This is consistent with the simulation results before, and further confirms the importance of magnetic reconnection for the electron acceleration in solar flares.
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]	X-RAY-EMISSION ; SOLAR-FLARE ; CURRENT SHEETS ; ACCELERATION ; EVOLUTION ; MICROWAVE ; ELECTRONS ; BURSTS ; RHESSI ; MOTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000254452300020
公开日期	2011-12-30
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/2031]
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	Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Ning, Zongjun. Magnetic reconnection rate and spectral index for two double-ribbon flares[J]. ASTROPHYSICS AND SPACE SCIENCE,2008,314(1-3):137-143.
APA	Ning, Zongjun.(2008).Magnetic reconnection rate and spectral index for two double-ribbon flares.ASTROPHYSICS AND SPACE SCIENCE,314(1-3),137-143.
MLA	Ning, Zongjun."Magnetic reconnection rate and spectral index for two double-ribbon flares".ASTROPHYSICS AND SPACE SCIENCE 314.1-3(2008):137-143.