Arbitrary amplitude dust-acoustic waves in Jupiter atmosphere

Abstract

Arbitrary amplitude dust-acoustic solitary waves in a dusty plasma in Jupiter atmosphere are expected to occur for distance greater than 15RJ, where RJ is the distance from the center of the Jupiter (RJ = 71398 km). We used the generalized hydrodynamic model for positive dust grains, Maxwellian electrons and ions those interact with solar wind protons and electrons. The energy-balance-like equation containing Sagdeev potential is derived and its numerical analysis is presented. The existence region of the arbitrary amplitude dust-acoustic solitary waves is defined. It is found that subsonic (Mach number <1) and supersonic (Mach number >1) acoustic waves can exist, but the dominant pulses are supersonic modes and the pulses have positive potential. The main effects to change the soliton existence region are the dust number density and the streaming solar wind protons parameters, via solar wind proton number density, temperature, and streaming speed. Increasing the dust grains number density leads to reduce the width and enhances the amplitude. For higher temperature solar wind proton, the solitary waves dwarfed and broader, while enhancement the solar wind proton number density and streaming speed leads to transfer more energy into the plasma that makes the pulses towering.