A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳和太阳系等离子体研究团组

	A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS
	Zhao, G. Q.1,2; Chen, L.1 ; Wu, D. J.1
刊名	ASTROPHYSICAL JOURNAL
	2014-05-01
卷号	786 期号:1 页码:0
关键词	plasmas radiation mechanisms: non-thermal Sun: radio radiation
ISSN号	0004-637X
英文摘要	Solar 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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ELECTRON-CYCLOTRON MASER ; EARTHS BOW SHOCK ; EJECTION-ASSOCIATED SHOCK ; DIRECT AMPLIFICATION ; ALFVEN WAVES ; ENERGETIC ELECTRONS ; DRIFT ACCELERATION ; DRIVEN SHOCK ; INTERPLANETARY SHOCKS ; MAGNETIC-FIELD
收录类别	SCI
原文出处	10.1088/0004-637X/786/1/47
语种	英语
WOS记录号	WOS:000335810700047
公开日期	2014-11-20
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/10645]
专题	紫金山天文台_太阳和太阳系等离子体研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 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.