PMO OpenIR  > 太阳高能及相关物理过程研究团组
The calculation of coronal magnetic field and density of nonthermal electrons in the 2003 October 27 microwave burst
Huang, Guang-Li1,2; Li, Jian-Ping1,2,3; Song, Qi-Wu1,2,3
2013-02-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume13Issue:2Pages:215-225
Corresponding AuthorHuang, GL (reprint author), Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China. Email: glhuang@pmo.ac.cn
AbstractBased on Dulk and Marsh's approximate theory about nonthermal gyrosynchrotron radiation, one simple impulsive microwave burst with a loop-like structure is selected for radio diagnostics of the coronal magnetic field and column density of nonthermal electrons, which are calculated from the brightness temperature, polarization degree, and spectral index, as well as the turnover frequency, observed by using the Nobeyama Radioheliograph and the Nobeyama Radio Polarimeters, respectively. Very strong variations (up to one or two orders of magnitude) of the calculated transverse and longitudinal magnetic fields with respect to the line-of-sight, as well as the calculated electron column density, appear in the looptop and footpoint sources during the burst. The absolute magnitude and varied range of the transverse magnetic field are evidently larger than those of the longitudinal magnetic field. The time evolution of the transverse magnetic field is always anti-correlated with that of the longitudinal magnetic field, but positively correlated with that of the electron column density. These results strongly support the idea that quantifying the energy released in a flare depends on a reconstruction of the coronal magnetic field, especially for the transverse magnetic field, and they are basically consistent with the recent theoretical and observational studies on the photospheric magnetic field in solar flares.
KeywordSun: Flares Sun: Magnetic Fields Sun: Radio Radiation
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1674-4527/13/2/008
WOS KeywordHARD X-RAY ; SOLAR FLARING LOOPS ; LOW-CUTOFF ENERGY ; GYROSYNCHROTRON EMISSION ; FLARES ; SIGNATURE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000314864300008
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9855
Collection太阳高能及相关物理过程研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Key Lab Solar Act, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Huang, Guang-Li,Li, Jian-Ping,Song, Qi-Wu. The calculation of coronal magnetic field and density of nonthermal electrons in the 2003 October 27 microwave burst[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(2):215-225.
APA Huang, Guang-Li,Li, Jian-Ping,&Song, Qi-Wu.(2013).The calculation of coronal magnetic field and density of nonthermal electrons in the 2003 October 27 microwave burst.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(2),215-225.
MLA Huang, Guang-Li,et al."The calculation of coronal magnetic field and density of nonthermal electrons in the 2003 October 27 microwave burst".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.2(2013):215-225.
Files in This Item:
File Name/Size DocType Version Access License
2013022The calculati(426KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Huang, Guang-Li]'s Articles
[Li, Jian-Ping]'s Articles
[Song, Qi-Wu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Huang, Guang-Li]'s Articles
[Li, Jian-Ping]'s Articles
[Song, Qi-Wu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Huang, Guang-Li]'s Articles
[Li, Jian-Ping]'s Articles
[Song, Qi-Wu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2013022The calculation of coronal magnetic field and density of nonthermal electrons in the 2003 October 27 microwave burst.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.