Comment on ‘Phase plane analysis of small amplitude electron-acoustic supernonlinear and nonlinear waves in magnetized plasmas’ (2020 Physica Scripta 95 105604)

Abstract

The recent paper by Tamang, Abdikian and Saha ((2020) Physica Scripta 95 105 604), about weakly nonlinear electron-acoustic waves in magnetized plasmas where the hot electrons have a Tsallis nonextensive distribution, is unfortunately marred by serious deficiencies. The proper limits imposed by a one-dimensional Tsallis distribution and by a reductive perturbation treatment were not taken into account correctly. Consequently, some results were unphysical. Why in a magnetized plasma the hot electrons should be described by a one-dimensional distribution is not discussed.