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PMO OpenIR  > 太阳活动的多波段观测研究团组  > 期刊论文
题名: ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS
作者: Huang, Guangli1, 2; Li JianPing(李建平)1, 2, 3; Song QiWu(宋其武)1, 2, 4; Tan, Baolin4, 5; Huang Yu(黄宇)1, 2; Wu, Zhao6, 7
刊名: ASTROPHYSICAL JOURNAL
出版日期: 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
学科分类: 天文和天体物理
DOI: 10.1088/0004-637X/806/1/12
文章类型: Article
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.
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
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000356810300012
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14916
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

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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
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