DOI: 10.1002/grl.50475
论文题名: Langmuir "snakes" and electrostatic decay in the solar wind
作者: Graham D.B. ; Cairns I.H. ; Robinson P.A.
刊名: Geophysical Research Letters
ISSN: 0094-9062
EISSN: 1944-8793
出版年: 2013
卷: 40, 期: 10 起始页码: 1934
结束页码: 1939
语种: 英语
英文关键词: electrostatic decay
; nonlinear waves
; type III radio bursts
Scopus关键词: Electron beam direction
; Langmuir waves
; Large amplitude
; Model and observation
; Nonlinear waves
; Radio bursts
; Solar radio bursts
; Zakharov equations
; Backscattering
; Electron beams
; Electrostatics
; Radio astronomy
; Decay (organic)
; backscatter
; electron
; magnetic field
; nonlinear wave
; nonlinearity
; numerical model
; observational method
; solar wind
; three-dimensional modeling
; waveform analysis
; Serpentes
英文摘要: When Langmuir waves are driven by an electron beam to large amplitudes, they can undergo electrostatic (ES) decay to smaller wave numbers via a series of backscatters. Truncated ES decay, where the number of backscatters is reduced due to damping, is modeled here using the three-dimensional ES Zakharov equations. Langmuir beats develop in "snake"-like structures parallel to the electron beam direction and are most evident when decay is truncated to a single backscatter. From these results, an analytic form is derived and shown to be consistent with some of the waveforms and spectra observed by STEREO in the source regions of type III solar radio bursts. The agreement between the model and observations provides strong evidence for ES decay and Langmuir "snakes" parallel to the electron beam and so the ambient magnetic field. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879965787&doi=10.1002%2fgrl.50475&partnerID=40&md5=b5ea1f5d6b65691b855a96a07e27cd1c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6326
Appears in Collections: 气候减缓与适应
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作者单位: School of Physics, University of Sydney, Sydney, NSW 2006, Australia
Recommended Citation:
Graham D.B.,Cairns I.H.,Robinson P.A.. Langmuir "snakes" and electrostatic decay in the solar wind[J]. Geophysical Research Letters,2013-01-01,40(10).