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题名: ELECTRON CYCLOTRON MASER EMISSION IN CORONAL ARCHES AND SOLAR RADIO TYPE V BURSTS
作者: Tang, J. F.1, 2; Wu, D. J.3; Tan, C. M.2
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2013-12-10
卷号: 779, 期号:1
关键词: masers ; plasmas ; radiation mechanisms: non-thermal ; Sun: radio radiation
DOI: 10.1088/0004-637X/779/1/83
文章类型: Article
英文摘要: Solar radio type V bursts were classified as a special spectral class based on their moderately long duration, wide bandwidth, and sense of polarization opposite of associated type III bursts. However, type V bursts are also closely related to the preceding type III bursts. They have an approximately equal source height and the same dispersion of position with frequency. Electron cyclotron maser (ECM) instability driven by beam electrons has been used to explain type III bursts in recent years. We propose ECM emission as the physical process of type V solar radio bursts. According to the observed properties of type V and III bursts, we propose that energetic electrons in excited type V continuum are trapped in coronal loops, which are adjacent to the open field lines traced by type III electrons. With the proposed magnetic field configuration and the ECM emission mechanism, the observed properties of type V bursts, such as long duration, wide bandwidth, and opposite sense of polarization can be reasonably explained by our model.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: DIRECT AMPLIFICATION ; ACTIVE REGIONS ; MODEL ; INSTABILITY ; GENERATION ; RADIATION ; FLARES ; WAVES ; FIELD
收录类别: SCI
语种: 英语
WOS记录号: WOS:000328160100083
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15511
Appears in Collections:太阳和太阳系等离子体研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
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