Exact nonlinear dust kinetic Alfvén waves in a dust–ion plasma

Shielding of moving line charges

“…Physically, this result can be attributed to the fact that when V is sufficiently large, the phase velocity of the excited plasma waves can become so small that the waves become self trapped and cannot propagate away from a finite region near the line charge. It may be of interest to point out that quasistationary plasma wave solitons without external driver have also been reported earlier [14][15][16][17][18]. However, the latter are characterized by density humps (instead of dips like here) with broad bases and narrow peaks, and have been attributed to highly localized balance between the wave dispersion and nonlinearity.…”

Global limits on kinetic Alfvénon speed in quasineutral plasmas

“…For instance, the α = 1 (electron-ion) limiting case of the Kappa distribution in Eq. (19) has been investigated in Ref. [26].…”

“…Evaluation of Eq. (19) indicates that the effects of adiabatic index, γ, and fractional ion-temperature, σ, is to shrink (widen) the solitary matching speed-range, while, the effects of fractional electron number-density, α, and fractional positron temperature, δ, is to widen (shrink) the corresponding range for βd n i Ψ * (1) < 2 (βd n i Ψ * (1) > 2). It is also observed from the values given in Eq.…”

Large-amplitude dust inertial Alfvén waves in an electron-depleted dusty plasma

“…The parallel electric field is caused by the parallel ion current. DKASWs in electron-depleted dust-ion plasma were studied by Mirza et al [22]. They observed sub-Alfvénic compressive and rarefactive DKASWs and super-Alfvénic compressive DKASWs.…”