ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS

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

	ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS
	Huang, Guangli 1,2; Li, Jianping1,2,3 ; Song, Qiwu1,2,4 ; Tan, Baolin 4,5; Huang, Yu1,2 ; Wu, Zhao 6,7
刊名	ASTROPHYSICAL JOURNAL
	2015-06-10
卷号	806 期号:1 页码:12
关键词	Sun: corona Sun: flares Sun: magnetic fields Sun: radio radiation
英文摘要	Based on the observed data by the Nobeyama Radio Observatory and the nonthermal gyrosynchrotron theory, the calculated magnetic field in a loop-like radio source of the 2001 October 23 flare attenuates from hundreds to tens of Gauss,. except in the region with very weak magnetic fields. Meanwhile, the viewing angle between the magnetic field and line of sight has a similar attenuation from tens to around ten degrees, implying that the transverse magnetic component attenuates much faster than the longitudinal one. All of these results can be understood by the magnetic energy release process in solar flares. Moreover, the column density of nonthermal electrons decreases from 109-10 to 107-8 cm(-2) during the flare, except in the region with very weak magnetic fields, where its value is larger than that with strong magnetic fields due to the mirroring effect. The calculated error and harmonic number of gyrofrequency better suit the region with strong magnetic fields.
学科主题	天文和天体物理
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	2011 FEBRUARY 15 ; GYROSYNCHROTRON EMISSION ; THERMAL ELECTRONS ; FLARE ; ENERGY ; SIGNATURE ; RADIATION ; I.
收录类别	SCI
语种	英语
WOS记录号	WOS:000356810300012
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/14916]
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, Jiangsu, Peoples R China 2.Chinese Acad Sci, Key Lab Space Astron & Dark Matter, Nanjing 210008, Jiangsu, Peoples R China 3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China 4.Chinese Acad Sci, Key Lab Solar Act, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Shandong Univ, Inst Space Sci, Weihai 264209, Peoples R China 7.Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R China
推荐引用方式 GB/T 7714	Huang, Guangli,Li, Jianping,Song, Qiwu,et al. ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS[J]. ASTROPHYSICAL JOURNAL,2015,806(1):12.
APA	Huang, Guangli,Li, Jianping,Song, Qiwu,Tan, Baolin,Huang, Yu,&Wu, Zhao.(2015).ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS.ASTROPHYSICAL JOURNAL,806(1),12.
MLA	Huang, Guangli,et al."ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS".ASTROPHYSICAL JOURNAL 806.1(2015):12.