Nonlinear ion-acoustic solitary waves in an electron-positron-ion plasma with relativistic positron beam

Sarma Ridip¹, Misra Amar P², Adhikary Nirab C^{3, †}

(color online) The phase velocity λ is plotted with respect to the positron concentration μ_b along with variable relativistic factor , where is 0.2, 0.4, and 0.6 for blue dotted, red dashed, and green bold lines, respectively, and other plasma parameters are c₁ = 10³, α = 0.2, and σ = 0.1.