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A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS
Zhao, G. Q.1,2; Chen, L.1; Wu, D. J.1
2014-05-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume786Issue:1Pages:0
AbstractSolar coronal shocks are very common phenomena in the solar atmosphere and are believed to be the drivers of solar type II radio bursts. However, the microphysical nature of these emissions is still an open question. This paper proposes that electron cyclotron maser (ECM) emission is responsible for the generation of radiation from the coronal shocks. In the present model, an energetic ion beam accelerated by the shock first excites the Alfven wave (AW), then the excited AW leads to the formation of a density-depleted duct along the foreshock boundary of the shock. In this density-depleted duct, the energetic electron beam produced via the shock acceleration can effectively excite radio emission by ECM instability. Our results show that this model may potentially be applied to solar type II radio bursts.
KeywordPlasmas Radiation Mechanisms: Non-thermal Sun: Radio Radiation
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/786/1/47
WOS KeywordELECTRON-CYCLOTRON MASER ; EARTHS BOW SHOCK ; EJECTION-ASSOCIATED SHOCK ; DIRECT AMPLIFICATION ; ALFVEN WAVES ; ENERGETIC ELECTRONS ; DRIFT ACCELERATION ; DRIVEN SHOCK ; INTERPLANETARY SHOCKS ; MAGNETIC-FIELD
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000335810700047
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10645
Collection太阳和太阳系等离子体研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, G. Q.,Chen, L.,Wu, D. J.. A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS[J]. ASTROPHYSICAL JOURNAL,2014,786(1):0.
APA Zhao, G. Q.,Chen, L.,&Wu, D. J..(2014).A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS.ASTROPHYSICAL JOURNAL,786(1),0.
MLA Zhao, G. Q.,et al."A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS".ASTROPHYSICAL JOURNAL 786.1(2014):0.
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