Effect of dust on drift magnetosonic wave in anisotropic low beta plasma

Uzma, Ch.; Naim, Hafsa; Murtaza, G.

doi:10.1063/1.4979273

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…0 e 0 b p =  , in which the real wave vector k lies in the x-z plane. The dispersion relation in such a plasma can be written as [15,19,20,31,32]…”

Section: Mathematical Modelmentioning

confidence: 99%

“…Following the same procedure adopted by the authors in references [15,19,20,31,32], we get a simplified expression for ò as For MS waves, as we know, the parallel wavenumber is small compared to the perpendicular wavenumber which means 1 0 z a  should be used in equation 4, in which case, the asymptotic form of the plasma dispersion function needs to be taken into account, i.e., [23,24] which means that the real frequency is independent of κ, in much the same way as the real frequency of electrostatic waves. This has to do with the structural similarities of the two dielectric tensors (equations (40) and (3) of references [24] and [33], respectively).…”

Section: |mentioning

confidence: 99%

“…Following the same procedure adopted by the authors in references [15,19,20,31,32], we get a simplified expression for ò as…”

Section: |mentioning

confidence: 99%

“…Depending on the nature of the plasma, WPI is affected by various effects such as the presence of dust [15][16][17][18], temperature anisotropy [19] and density inhomogeneity [20]. In Maxwellian distributed plasmas, studies have shown that increasing the density inhomogeneity or temperature anisotropy with T T…”

Section: Introductionmentioning

confidence: 99%

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Effect of kappa distribution on the damping rate of the obliquely propagating magnetosonic mode

Khan

Murtaza

2018

Plasma Sci. Technol.

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Data from spacecrafts suggest that space plasma has an abundance of suprathermal particles which are controlled by the spectral index κ when modeled on kappa particle velocity distribution. In this paper, considering homogeneous plasma, the effect of integer values of κ on the damping rate of an obliquely propagating magnetosonic (MS) wave is studied. The frequency of the MS wave is assumed to be less than ion cyclotron frequency, i.e., i w w . Under this assumption, the dispersion relation is investigated both numerically and analytically, and it is found that the real frequency of the wave is not a sensitive function of κ, but the imaginary part of the frequency is. It is also shown that for those values of κ where a large number of resonant particles participate in wave-particle interaction, the wave is heavily damped, as expected. The possible application of the results to the solar wind is discussed.

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“…0 e 0 b p =  , in which the real wave vector k lies in the x-z plane. The dispersion relation in such a plasma can be written as [15,19,20,31,32]…”

Section: Mathematical Modelmentioning

confidence: 99%

Section: |mentioning

confidence: 99%

“…Following the same procedure adopted by the authors in references [15,19,20,31,32], we get a simplified expression for ò as…”

Section: |mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of kappa distribution on the damping rate of the obliquely propagating magnetosonic mode

Khan

Murtaza

2018

Plasma Sci. Technol.

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On the Bernstein mode in a degenerate anisotropic quantum plasma

et al. 2017

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By employing quantum Vlasov–Maxwell set of equations, we have derived a general dispersion relation for perpendicularly propagating electrostatic waves in a degenerate anisotropic quantum plasma. Specifically, we discuss the Bernstein mode and examine how the effects of quantum diffraction and degenerate anisotropy influence its propagation characteristics. We find that the spectrum of the mode becomes more oscillatory. Further, we observe that while the anisotropy significantly affects the mode for β = ωpe/ωce > 1, the quantum effect prevails for β < 1. These effects become more prominent at higher harmonics. It is also pointed out that our results may prove helpful to understand the phenomena of plasma heating and particle acceleration in astrophysical environments like white dwarf.

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Magnetosonic cnoidal waves and solitons in a magnetized dusty plasma

2018

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An investigation of magnetosonic nonlinear periodic (cnoidal) waves is presented in a magnetized electron-ion-dust (e−i−d) plasma having cold dust fluid with inertialess warm ions and electrons. The reductive perturbation method is employed to derive the Korteweg-de Vries equation. The dispersion relation for magnetosonic cnoidal waves is determined in the linear limit. The magnetosonic cnoidal wave solution is derived using the Sagdeev pseudopotential approach under the specific boundary conditions. There is the formation of only positive potential magnetosonic cnoidal waves and solitary structures in the high plasma-β limit. The effects of various plasma parameters, viz., plasma beta (β), σ (temperature ratio of electrons to ions), and μd (ratio of the number density of dust to electrons) on the characteristics of magnetosonic cnoidal waves are also studied numerically. The findings of the present investigation may be helpful in describing the characteristics of various nonlinear excitations in Earth's magnetosphere, solar wind, Saturn's magnetosphere, and space/astrophysical environments, where many space observations by various satellites confirm the existence of dust grains, highly energetic electrons, and high plasma-β.

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Effect of dust on drift magnetosonic wave in anisotropic low beta plasma

Cited by 5 publications

References 38 publications

Effect of kappa distribution on the damping rate of the obliquely propagating magnetosonic mode

Effect of kappa distribution on the damping rate of the obliquely propagating magnetosonic mode

On the Bernstein mode in a degenerate anisotropic quantum plasma

Magnetosonic cnoidal waves and solitons in a magnetized dusty plasma

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