Electron acoustic solitary waves in the Earth’s magnetotail region
作者: A.P. KakadS.V. SinghR.V. ReddyG.S. LakhinaS.G. Tagare
作者单位: 1Indian Institute of Geomagnetism, New Panvel (West), Navi Mumbai 410 218, India
2Department of Mathematics, Addis Ababa University, Addis Ababa, Ethiopia
刊名: Advances in Space Research, 2009, Vol.43 (12), pp.1945-1949
来源数据库: Elsevier Journal
DOI: 10.1016/j.asr.2009.03.005
关键词: Electron acoustic solitary wavesElectric field bipolar pulsesBroadband electrostatic noise
英文摘要: Abstract(#br)Satellite observations have revealed solitary potential structures in the Earth’s magnetotail region. These structures have both positive (compressive) and negative (rarefactive) electrostatic potentials. In this paper we study the electron-acoustic solitary waves (EASWs) in an unmagnetized plasma consisting of cold plasma electrons and isothermal ions with two different temperatures. Using the reductive perturbation method, the nonlinear evolution of such structures is studied. The numerical computations are performed to study the role of two temperature ions in the generation of EASWs. In this case, the model supports the existence of both positive and negative electrostatic potentials with bipolar pulses. The electric field associated with these positive and negative...
全文获取路径: Elsevier  (合作)
影响因子:1.183 (2012)