Active Galactic Nuclei

COLLIN‐ZAHN, Suzy

doi:10.1002/9781394163724.ch1

Cited by 1 publication

(1 citation statement)

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“…Electron-positron (e-p) pair plasmas demonstrate a distinctive state of matter which are ubiquitous in various plasma environments, e.g. black holes [1], pulsars [2] and quasars [3,4], in near the polar cap of the fast rotating neutron stars [5], in the active galactic nuclei [6], and are also relevant in the high-power laser-plasma interaction experiments [7]. Due to the positron lifetime in such a plasma is long enough, we shall consider a plasma composing of electrons, positrons, and ions [8].…”

Section: Introductionmentioning

confidence: 99%

The effect of κ-distributed trapped electrons on fully nonlinear electrostatic solitary waves in an electron–positron-relativistic ion plasma

Elkamash¹,

Elhanbaly²

2021

J. Phys. A: Math. Theor.

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Based on the hydrodynamic model, the existence and propagation features of fully nonlinear electrostatic solitary waves in an unmagnetized, collisionless, homogenous three-component plasma have been investigated. The plasma containing cold relativistic ions, Boltzmann positrons, and trapped electrons modelled by κ-trapped distribution function. Employing the pseudo-potential method, the Sagdeev pseudo-potential and the first integral energy equation for the system as a function of the electrostatic potential (disturbance) have been derived. The influence of the relevant plasma configurations including the propagation pulse velocity, the superthermality index, the characteristic trapping parameter, the relativistic strength parameter, the positron density ratio, and the positron temperature ratio, on the properties of electrostatic solitary pulse profile has been determined. The results of our study may be helpful in better interpretation of the existence of localized structures in astrophysical and space plasmas as well as in laboratory plasmas, where the positron-ion plasmas with nonthermal trapped electrons can exist.

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