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Comment on ‘Electron acoustic super solitary waves in a magnetized plasma’, J. Plasma Phys. 84, 905840406 (2018)

  • Frank Verheest (a1) (a2) and Manfred A. Hellberg (a2)


The plasma model used in a recent paper by Kamalam et al. (J. Plasma Phys., vol. 84, 2018, 905840406) assumes a Boltzmann description for two hot ion species, in the presence of two adiabatic (fluid) electron species, for the study of obliquely propagating acoustic-type nonlinear solitary waves with respect to a static magnetic field. We argue that the assumption of Boltzmann distributions for the hot ions is incorrect, thus invalidating their conclusions, in particular about the possible occurrence of supersolitons in magnetized plasmas.


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Devanandhan, S., Singh, S. V., Lakhina, G. S. & Bharuthram, R. 2012 Electron acoustic waves in a magnetized plasma with kappa distributed ions. Phys. Plasmas 19, 082314.
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Kamalam, T., Steffy, S. V. & Ghosh, S. S. 2018 Electron acoustic super solitary waves in a magnetized plasma. J. Plasma Phys. 84, 905840406.
Kamalam, T., Steffy, S. V. & Ghosh, S. S. 2019 Corrigendum: Electron acoustic super solitary waves in a magnetized plasma [Journal of Plasma Physics 84, 905840406 (2018)]. J. Plasma Phys. 85, 945850102.
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Verheest, F., Hellberg, M. A. & Lakhina, G. S. 2007 Necessary conditions for the generation of acoustic solitons in magnetospheric and space plasmas with hot ions. Astrophys. Space Sci. Trans. 3, 1520.
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