COEXISTING AND SUPERNONLINEAR ION-ACOUSTIC WAVE FEATURES IN TITAN'S IONOSPHERE

摘要

Coexisting and supernonlinear ion-acoustic wave features are explored in a Titan's ionosphere comprising of superthermal electrons and three distinct components of ions revealed by several missions, i.e., HCNH~+, C_2H_5~+ and C_3H_5~+. Employing the concept of phase plane analysis, the formulated autonomous dynamical systems is analyzed for all feasible linear and supernonlinear waves. The computational simulation divulged that system is bestowed with the presence of various coexisting orbits, like multiperiodic, quasiperiodic and chaotic orbits in presence of exterior force. The existence of chaotic feature is also quantified with the Lyapunov exponents.