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The effect of electron beams on cyclotron maser emission excited by lower-energy cutoffs
Zhao, G. Q.1; Feng, H. Q.1; Wu, D. J.2
2016-05-01
Source PublicationPHYSICS OF PLASMAS
Volume23Issue:5
AbstractElectron-cyclotron maser (ECM) is one of the most important emission mechanisms in astrophysics and can be excited efficiently by lower-energy cutoffs of power-law electrons. These non-thermal electrons probably propagate as a directed collimated beam along ambient magnetic fields. This paper investigates the ECM, in which the effect of electron beams is emphasized. Results show the dependence of emission properties of the ECM on the beam feature. The maximum growth rate of the extraordinary mode (X2) rapidly decreases as the beam momentum increases, while the growth rate of the ordinary mode (O1) changes slightly. In particular, the ordinary mode can overcome the extraordinary mode and becomes the fastest growth mode once the beam momentum is large enough. This research presents an extension of the conventional studies on ECM driven by lower-energy cutoffs and may be helpful to understand better the emission process of solar type I radio bursts, which are dominated by the ordinary mode emission. Published by AIP Publishing.
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1063/1.4948713
WOS KeywordTERRESTRIAL KILOMETRIC RADIATION ; POWER-LAW ELECTRONS ; SOLAR RADIO-BURSTS ; DIRECT AMPLIFICATION ; MAGNETIC-FIELD ; NONTHERMAL ELECTRONS ; PARTICLE-ACCELERATION ; ULTRACOOL DWARFS ; CURRENT REGION ; CORONAL LOOPS
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000378427900014
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16249
Collection太阳和太阳系等离子体研究团组
Affiliation1.Luoyang Normal Univ, Inst Space Phys, Luoyang, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Zhao, G. Q.,Feng, H. Q.,Wu, D. J.. The effect of electron beams on cyclotron maser emission excited by lower-energy cutoffs[J]. PHYSICS OF PLASMAS,2016,23(5).
APA Zhao, G. Q.,Feng, H. Q.,&Wu, D. J..(2016).The effect of electron beams on cyclotron maser emission excited by lower-energy cutoffs.PHYSICS OF PLASMAS,23(5).
MLA Zhao, G. Q.,et al."The effect of electron beams on cyclotron maser emission excited by lower-energy cutoffs".PHYSICS OF PLASMAS 23.5(2016).
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