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Theoretical scaling law of coronal magnetic field and electron power-law index in solarmicrowave burst sources
Huang, Y.1,2; Song, Q. W.1,2; Tan, B. L.3,4
2018-04-01
Source PublicationASTROPHYSICS AND SPACE SCIENCE
ISSN0004-640X
Volume363Issue:4Pages:7
Abstract

It is first proposed a theoretical scaling law respectively for the coronal magnetic field strength B and electron power-law index delta versus frequency and coronal height in solar microwave burst sources. Based on the non-thermal gyro-synchrotron radiation model (Ramaty in Astrophys. J. 158:753, 1969), B and delta are uniquely solved by the observable optically-thin spectral index and turnover (peak) frequency, the other parameters (plasma density, temperature, view angle, low and high energy cutoffs, etc.) are relatively insensitive to the calculations, thus taken as some typical values. Both of B and delta increase with increasing of radio frequency but with decreasing of coronal height above photosphere, and well satisfy a square or cubic logarithmic fitting.

KeywordThe Sun: flares The Sun: radio radiation The Sun: corona The Sun: magnetic fields The Sun: energetic particles
DOI10.1007/s10509-018-3301-6
WOS KeywordGYROSYNCHROTRON EMISSION ; MICROWAVE-BURSTS ; PLASMA
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000429130000019
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22425
Collection中国科学院紫金山天文台
Corresponding AuthorHuang, Y.
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.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Key Lab Solar Activ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Huang, Y.,Song, Q. W.,Tan, B. L.. Theoretical scaling law of coronal magnetic field and electron power-law index in solarmicrowave burst sources[J]. ASTROPHYSICS AND SPACE SCIENCE,2018,363(4):7.
APA Huang, Y.,Song, Q. W.,&Tan, B. L..(2018).Theoretical scaling law of coronal magnetic field and electron power-law index in solarmicrowave burst sources.ASTROPHYSICS AND SPACE SCIENCE,363(4),7.
MLA Huang, Y.,et al."Theoretical scaling law of coronal magnetic field and electron power-law index in solarmicrowave burst sources".ASTROPHYSICS AND SPACE SCIENCE 363.4(2018):7.
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