We study solitary wave interactions in the Euler–Poisson equations modeling ion acoustic plasmas and their approximation by KdV n-solitons. Numerical experiments are performed and solutions compared to appropriately scaled KdV n-solitons. While largely correct qualitatively the soliton solutions did not accurately capture the scattering shifts experienced by the solitary waves. We propose corre...

The presence of dynamic, large amplitude solitary waves in the auroral regions of space is well known. Since their velocities are of the order of the ion acoustic speed, they may well be considered as being generated from the nonlinear evolution of ion acoustic waves. However, they do not show the expected width-amplitude correlation for K-dV solitons. Recent POLAR observations have actually re...

Fluctuations of the low frequency sound field in the presence of an internal solitary wave packet during the Shallow Water '06 experiment are analyzed. Acoustic, environmental, and on-board ship radar image data were collected simultaneously before, during, and after a strong internal solitary wave packet passed through the acoustic track. Preliminary analysis of the acoustic wave temporal inte...

Necessary conditions are discussed for the possible generation of large solitary acoustic modes in plasmas with one or more ion species which are hotter than some or all of the electron species. The analysis is based on a fluid dynamic approach. It is found that in most of these configurations the existence ranges for the solitary wave velocities are very narrow and close to one of the thermal ...

An opposite polarity dusty plasma system (containing inertial positive as well negative dust species and inertialess singly charged ion species) is considered. The nature of the electrostatic self-gravitational potential structures (associated with dust-acoustic waves) identified by numerical analysis two coupled second-order nonlinear differential equations. latter are Poisson’s equations for ...

Abstract Dust-acoustic (DA) solitary and periodic waves investigations were performed in a magnetized self-gravitating dusty plasma consisting of negatively positively charged dust grains the presence inertialess ions electrons. The Korteweg–de Vries–Burger (KdVB) equation has been derived. numerical revealed compressive or rarefactive DA solitons depending on parameters. nonlinear homoclinic t...

The purpose of this study is to examine the properties dust-acoustic solitary waves in a complex magnetoplasma made up negatively charged moving dust grains lower ionospheric region and inertialess electrons ions obeying Maxwell kappa distributions, respectively. In context, reductive perturbation technique carried out obtain Zakharov–Kuznetsov (ZK) equation within given framework. obtained evo...

• Ion acoustic solitary waves in the four-component complex plasma with Cairns-Tsallis distribution are studied. Conditions of to exist Numerical analyses for depend on nonextensive and nonthermal parameters made. We study ion consisting cold inertial ions, positrons, hot (two-temperature) electrons, where electrons positrons a have different parameters. Base hydrodynamic equations Sagdeev pseu...