CYCLOTRON MASER EMISSION FROM POWER-LAW ELECTRONS WITH STRONG PITCH-ANGLE ANISOTROPY
文献类型：期刊论文
| 作者 | Zhao, G. Q.1; Feng, H. Q.1; Wu, D. J.2; Chen, L.2; Tang, J. F.3 ; Liu, Q.1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2016-05-10 |
| 卷号 | 822期号:2 |
| 关键词 | plasmas radiation mechanisms: non-thermal Sun: radio radiation |
| ISSN号 | 0004-637X |
| 英文摘要 | Energetic electrons with power-law spectra are commonly observed in astrophysics. This paper investigates electron cyclotron maser emission (ECME) from the power-law electrons, in which strong pitch-angle anisotropy is emphasized. The electron distribution function proposed in this paper can describe various types of pitch-angle anisotropy. Results show that the emission properties of ECME, including radiation growth, propagation, and frequency properties, depend considerably on the types of electron pitch-angle anisotropy, and different wave modes show different dependences on the pitch angle of electrons. In particular, the maximum growth rate of the X2 mode rapidly decreases with respect to the electron pitch-angle cosine mu(0) at which the electron distribution peaks, while the growth rates for other modes (X1, O1, O2) initially increase before decreasing as mu(0) increases. Moreover, the O mode, as well as the X mode, can be the fastest growth mode, in terms of not only the plasma parameter but also the type of electron pitch-angle distribution. This result presents a significant extension of the recent researches on ECME driven by the lower energy cutoff of power-law electrons, in which the X mode is generally the fastest growth mode. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SOLAR RADIO-BURSTS ; TERRESTRIAL KILOMETRIC RADIATION ; RECONNECTING CURRENT SHEET ; ENERGY CUTOFF BEHAVIOR ; X-RAY-BURSTS ; DIRECT AMPLIFICATION ; PARTICLE-ACCELERATION ; MAGNETIC-FIELD ; GYROSYNCHROTRON EMISSION ; NONTHERMAL ELECTRONS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000377204900001 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1401]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 |
| 作者单位 | 1.Luoyang Normal Univ, Inst Space Phys, Luoyang 471022, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, G. Q.,Feng, H. Q.,Wu, D. J.,et al. CYCLOTRON MASER EMISSION FROM POWER-LAW ELECTRONS WITH STRONG PITCH-ANGLE ANISOTROPY[J]. ASTROPHYSICAL JOURNAL,2016,822(2). |
| APA | Zhao, G. Q.,Feng, H. Q.,Wu, D. J.,Chen, L.,Tang, J. F.,&Liu, Q..(2016).CYCLOTRON MASER EMISSION FROM POWER-LAW ELECTRONS WITH STRONG PITCH-ANGLE ANISOTROPY.ASTROPHYSICAL JOURNAL,822(2). |
| MLA | Zhao, G. Q.,et al."CYCLOTRON MASER EMISSION FROM POWER-LAW ELECTRONS WITH STRONG PITCH-ANGLE ANISOTROPY".ASTROPHYSICAL JOURNAL 822.2(2016). |
入库方式： OAI收割
来源：新疆天文台
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