Cylindrical and Spherical Electron-Acoustic Shock Waves in Electron-Positron-Ion Plasmas with Nonextensive Electrons and Positrons

2015 ◽  
Vol 63 (2) ◽  
pp. 243-248 ◽  
Author(s):  
A. Rafat ◽  
M.M. Rahman ◽  
M.S. Alam ◽  
A.A. Mamun
Keyword(s):  
Shock Waves ◽  
Nonextensive Electrons ◽  
Electron Positron ◽  
Electrons And Positrons ◽  
Nonextensive Electrons And Positrons ◽  
Electron Acoustic

Nonplanar ion-acoustic Gardner solitons in a pair-ion plasma with nonextensive electrons and positrons

2012 ◽  
Vol 343 (1) ◽  
pp. 265-272 ◽  
Author(s):  
Uday Narayan Ghosh ◽  
Deb Kumar Ghosh ◽  
Prasanta Chatterjee ◽  
Mustapha Bacha ◽  
Mouloud Tribeche
Keyword(s):  
Nonextensive Electrons ◽  
Ion Plasma ◽  
Electrons And Positrons ◽  
Ion Acoustic ◽  
Nonextensive Electrons And Positrons ◽  
Gardner Solitons

Nonlinear magnetosonic solitary and shock waves in strongly coupled quantum electron–positron–ion plasmas

2016 ◽  
Vol 82 (3) ◽  
Author(s):  
Xiaodan Wang ◽  
Yunliang Wang ◽  
Tielu Liu ◽  
Fan Zhang
Keyword(s):  
Shock Waves ◽  
Hydrodynamic Model ◽  
Numerical Solutions ◽  
Kinetic Regime ◽  
Strongly Coupled ◽  
And Shock Waves ◽  
Electron Positron ◽  
Electrons And Positrons ◽  
Quantum Electron ◽  
Solitary And Shock Waves

Two-dimensional nonlinear magnetosonic solitary and shock waves propagating perpendicular to the applied magnetic field are presented in quantum electron–positron–ion plasmas with strongly coupled classical ions and weakly coupled quantum electrons and positrons. The generalized viscoelastic hydrodynamic model is used for the ions and a quantum hydrodynamic model is introduced for the electrons and positrons. In the weakly nonlinear limit, a modified Kadomstev–Petviashvili (KP) equation with a damping term and a KP–Burgers equation have been derived in the kinetic regime and hydrodynamic regime, respectively. The analytical and numerical solutions of the modified KP and KP–Burgers equations are also presented and analysed with the typical parameters of a white dwarf star and pulsar magnetosphere, which show that the quantum plasma beta and the variation of positron number density have remarkable effects on the propagation of magnetosonic solitary and shock waves.

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