Navegação Ciências Exatas e da Terra por Assunto "Waves"
Resultados 1-11 de 11
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Effects of dust particles charged by inelastic collisions and by photoionization on Alfven waves in a stellar wind
(2021) [Artigo de periódico]Using a kinetic description of a homogeneous magnetized dusty plasma with Maxwellian distribution of electrons and protons and dust particles charged by inelastic collisions and by photoionization, we analyse the dispersion ... -
Group velocity of obliquely propagating Alfvén waves in a magnetized dusty plasma
(2022) [Artigo de periódico]In this work, we investigate the characteristics of the group velocity of obliquely propagating Alfvén in a dusty plasma typical of a stellar wind. The dispersion relation is derived with the aid of the kinetic theory for ... -
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons
(2014) [Artigo de periódico]The propagation of electrostatic waves in a densemagnetized electron–positron–ion (EPI) plasma with nonrelativistic and ultrarelativistic degenerate electrons and positrons is investigated. The linear dispersion relation ... -
Nonlinear evolution of beam-plasma instability in inhomogeneous medium
(2011) [Artigo de periódico]The problem of electron-beam propagation in inhomogeneous solar wind is intimately related to the solar type II and/or type III radio bursts. Many scientists have addressed this issue in the past bymeans of quasi-linear ... -
Oblique Alfvén waves in a stellar wind environment with dust particles charged by inelastic collisions and by photoionization
(2022) [Artigo de periódico]The characteristics of Alfvén waves propagating in a direction oblique to the ambient magnetic field in a stellar wind environment are discussed. A kinetic formulation for a magnetized dusty plasma is adopted considering ... -
On the counterpropagation of waves
(2019) [Artigo de periódico]This work analyses the counterpropagation of transversal plane waves in a linear, homogeneous, nondispersive, and isotropic medium. Although this is a traditional subject in disciplines associated with wave phenomena, a ... -
Particle-in-cell and weak turbulence simulations of plasma emission
(2019) [Artigo de periódico]The plasma emission process, which is the mechanism for solar type II and type III radio burst phenomena, is studied by means of particle-in-cell (PIC) and weak turbulence (WT) simulation methods. “Plasma emission” is meant ... -
Plasma emission by counter-streaming electron beams
(2016) [Artigo de periódico]The radiation emission mechanism responsible for both type-II and type-III solar radio bursts is commonly accepted as plasma emission. Recently Ganse et al. suggested that type-II radio bursts may be enhanced when the ... -
Plasma emission by nonlinear electromagnetic processes
(2015) [Artigo de periódico]The plasma emission, or electromagnetic (EM) radiation at the plasma frequency and/or its harmonic(s), is generally accepted as the radiation mechanism responsible for solar type II and III radio bursts. Identification and ... -
Solar wind strahl broadening by self-generated plasma waves
(2013) [Artigo de periódico]This Letter reports on the results of numerical simulations which may provide a possible explanation for the strahl broadening during quiet solar conditions. The relevant processes involved in the broadening are due to ... -
A theory of the fundamental plasma emission of type-III solar radio bursts
(2002) [Artigo de periódico]Results from plasma wave experiments in spacecraft give support to nonlinear interactions involving Langmuir waves, electromagnetic waves and ion-acoustic waves in association with type III solar radio bursts. In this paper ...
