Abstract:
Finite amplitude nonlinear ion-acoustic solitons, double layers, and supersolitons in a magnetized
two-component plasma composed of adiabatic warm ions fluid and energetic nonthermal electrons
are studied by employing the Sagdeev pseudopotential technique and assuming the charge neutrality
condition at equilibrium. The model generates supersoliton structures at supersonic Mach numbers
regime in addition to solitons and double layers, whereas in the unmagnetized two-component
plasma case only, soliton and double layer solutions can be obtained. Further investigation revealed
that wave obliqueness plays a critical role for the evolution of supersoliton structures in magnetized
two-component plasmas. In addition, the effect of ion temperature and nonthermal energetic electron
tends to decrease the speed of oscillation of the nonlinear electrostatic structures. The present
theoretical results are compared with Viking satellite observations.
