Effect of<i>q</i>-nonextensive electrons on electron acoustic solitons

Abstract

Nonlinear electron acoustic solitary waves (EASWs) are addressed in a plasma consisting of a cold electron fluid, q-nonextensive hot electron velocity distribution and stationary ions. Soliton structures, the amplitude and nature of which depend sensitively on the q-nonextensive parameter, can exist. It is shown that the presence of hot nonextensive electrons may modify the domain of their allowable Mach numbers where electron acoustic solitons may exist. Our investigation is of wide relevance to astronomers and space scientists working on interstellar space plasmas.