Radiative and conductive cooling in a solar flare

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

	Radiative and conductive cooling in a solar flare
	Ning, Zongjun1,2 ; Li, Dong 1,2
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2012-03-01
卷号	338 期号:1 页码:15-21
关键词	Sun: flares Sun: X-ray bursts Hard
ISSN号	0004-640X
英文摘要	We investigate the radiative and conductive cooling in the solar flare observed by RHESSI on 2005 September 13. The radiative and conductive loss energies are estimated from the observations after the flare onset. Consistent with previous findings, the cooling is increased with time, especially the radiation becomes remarkable on the later phase of flare. According our method, about half of thermal energy is traced by RHESSI soft X-rays, while the other half is lost by the radiative (similar to 38%) and conductive (similar to 9%) cooling at end of the hard X-rays in this event. The non-thermal energy input of P-nth (inferred from RHESSI hard X-ray spectrum) is not well correlated with the derivative of thermal energy of dE(th)/dt (required to radiate the RHESSI soft X-ray flux and spectrum) alone. However, after consideration the radiation and conduction, a high correlation is obtained between the derivative of total thermal energy (dE(th)+E-rad+E-cond/dt) and nonthermal energy input (P(nt)h) from the flare start to end, indicating the relative importance of conductive and direct radiative losses during the solar flare development. Ignoring the uncertainties to estimate the energy from the observations, we find that about similar to 12% fraction of the known energy is transferred into the thermal energy for the 2005 September 13 flare.
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]	2005 SEPTEMBER 13 ; ELECTRON ACCELERATION ; MICROWAVE EMISSION ; SPECTRAL EVOLUTION ; RHESSI MICROFLARES ; ENERGY CUTOFFS ; MODEL ; TEMPERATURES ; EVAPORATION ; ERUPTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000299848400004
公开日期	2013-01-31
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8133]
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.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Ning, Zongjun,Li, Dong. Radiative and conductive cooling in a solar flare[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,338(1):15-21.
APA	Ning, Zongjun,&Li, Dong.(2012).Radiative and conductive cooling in a solar flare.ASTROPHYSICS AND SPACE SCIENCE,338(1),15-21.
MLA	Ning, Zongjun,et al."Radiative and conductive cooling in a solar flare".ASTROPHYSICS AND SPACE SCIENCE 338.1(2012):15-21.