Linear electrostatic waves in a three-component electron-positron-ion plasma

Abstract

Analytical linear electrostatic waves in a magnetized three-component electron-positron-ion plasma are studied in the low-frequency limit. By using the continuity and momentum equations with Poisson's equation, the dispersion relation for the electron-positron-ion plasma consisting of cool ions, and hot Boltzmann electrons and positrons is derived. In the linear regime, the propagation of two possible modes and their evolution are studied. In the cases of parallel and perpendicular propagation, it is shown that these two possible modes are always stable. The present investigation contributes to nonlinear propagation of electrostatic waves in space and the laboratory.

Electrostatic solitary waves in an electron-positron pair plasma with suprathermal electrons

“…Studies of e-p pair plasmas demonstrated that electrostatic solitary waves can be generated [40], though a Maxwellian distribution was assumed. A number of papers have also been devoted to the linear and nonlinear dynamics of electronacoustic waves [46,47], electrostatic waves [48][49][50][51][52][53][54][55], and in the presence of suprathermal (and non-thermal) electrons [46,50,52] in e-p pair plasmas. Moreover, the propagation of ion-acoustic waves [56][57][58][59], and dust-acoustic waves [60][61][62] have recently been studied in e-p plasmas.…”

Dissipative ion acoustic solitary waves in collisional, magneto‐rotating, non‐thermal electron–positron–ion plasma

“…It is exactly the same as Equation 21 of ref. [20] for cold ions. It is easy to find the ion cyclotron mode from Equation 30, given by…”

“…By employing the pseudopotential (Sagdeev potential) approach, the authors in ref. [17][18][19][20] Several space and astrophysical regimes, like Mercury, Saturn, solar wind, and earth magnetospheres, [21,22] contain high-energy particles with distribution functions having non-Maxwellian superthermal tails. The oblique propagation of small amplitude ion acoustic solitary profiles in a magnetized two-dimensional rotating three-component e-p-i plasmas have also been analysed, [10] and the non-linear Zakharov-Kuznetsov (ZK) equation was derived using the reductive perturbation method.…”

“…Employing Maxwellian assumption, the non-linear propagation of IAWs in e-p-i plasmas has been studied by several researchers in recent times. [17][18][19][20] Several space and astrophysical regimes, like Mercury, Saturn, solar wind, and earth magnetospheres, [21,22] contain high-energy particles with distribution functions having non-Maxwellian superthermal tails. The particles in such environments gain high velocities and energies due to their interactions with waves (wave-particle interaction) or due to some external forces acting on the plasma in these natural environments.…”