On the origin of solar white-light flares

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳高能及相关物理过程研究团组

	On the origin of solar white-light flares
	Gan, WQ; Henoux, JC ; Fang, C
刊名	ASTRONOMY & ASTROPHYSICS
	2000-02-01
卷号	354 期号:2 页码:691-696
关键词	Sun : flares Sun : chromosphere Sun : photosphere Sun : X-rays, gamma rays
ISSN号	0004-6361
英文摘要	Using the H alpha line intensity as a constraint, we study the role of a chromospheric condensation and the role of nonthermal effects in producing the continuum enhancement of white-light flares. Within an acceptable range of H alpha line intensities and electron energy flux, it is shown that neither a chromospheric condensation nor non-thermal effects alone can directly explain the observed continuum enhancement. The hybrid role of both chromospheric condensation and non-thermal effects can only lead to a Balmer jump, but still not to a significant continuum intensity increase between 4000 and 7000 Angstrom. A possible picture is discussed, that is, the Balmer jump is directly produced by the association of a chromospheric condensation and of non-thermal effects, while the continuum enhancement between 4000 and 7000 Angstrom is indirectly produced by the condensation and the non-thermal effects via radiative heating to the deeper photospheric layers.
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]	NON-THERMAL EXCITATION ; SEMI-EMPIRICAL MODELS ; K-LINE PROFILES ; NONTHERMAL PROCESSES ; CHROMOSPHERIC FLARES ; CONTINUUM EMISSION ; 1991 JUNE ; H-ALPHA ; DIAGNOSTICS ; ELECTRON
收录类别	SCI
语种	英语
WOS记录号	WOS:000085921500034
公开日期	2013-02-01
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8260]
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, Natl Astron Observ, Purple Mtn Observ, Nanjing 210008, Peoples R China 2.Observ Paris, DASOP, LPSH, UMR 8645, F-92195 Meudon, France 3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
推荐引用方式 GB/T 7714	Gan, WQ,Henoux, JC,Fang, C. On the origin of solar white-light flares[J]. ASTRONOMY & ASTROPHYSICS,2000,354(2):691-696.
APA	Gan, WQ,Henoux, JC,&Fang, C.(2000).On the origin of solar white-light flares.ASTRONOMY & ASTROPHYSICS,354(2),691-696.
MLA	Gan, WQ,et al."On the origin of solar white-light flares".ASTRONOMY & ASTROPHYSICS 354.2(2000):691-696.