PMO OpenIR  > 太阳活动的多波段观测研究团组
ATTENUATION OF CORONAL MAGNETIC FIELDS IN SOLAR MICROWAVE BURSTS
Huang, Guangli1,2; Li, Jianping1,2,3; Song, Qiwu1,2,4; Tan, Baolin4,5; Huang, Yu1,2; Wu, Zhao6,7
2015-06-10
Source PublicationASTROPHYSICAL JOURNAL
Volume806Issue:1Pages:12
AbstractBased 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.
KeywordSun: Corona Sun: Flares Sun: Magnetic Fields Sun: Radio Radiation
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/806/1/12
WOS Keyword2011 FEBRUARY 15 ; GYROSYNCHROTRON EMISSION ; THERMAL ELECTRONS ; FLARE ; ENERGY ; SIGNATURE ; RADIATION ; I.
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000356810300012
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14916
Collection太阳活动的多波段观测研究团组
Affiliation1.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
Recommended Citation
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.
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