Electromagnetic kinetic instabilities in multicomponent space plasmas: Theoretical predictions and computer simulation experiments

Cuperman, S.

doi:10.1029/rg019i002p00307

Cited by 75 publications

(33 citation statements)

References 96 publications

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“…The maxima wave number do not shifts in this case significantly showing that the excited wave is in a narrow band of k. The real frequency does not change significantly. Cuperman [38,39] had shown that the relative growth in each band would be influenced by thermal energy of energetic proton component. Thus the effects of thermal velocity for an-isotropic Maxwellian and loss-cone distribution have been shown.…”

Section: Resultsmentioning

confidence: 99%

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Study of Electromagnetic Ion-Cyclotron Instability in a Magnetoplasma

Pandey¹,

Singh²

2010

PIER M

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Abstract-Excitation of electromagnetic ion-cyclotron instability in the magneto plasma in the presence of perpendicular A.C. electric field for a generalized distribution function for background cold electrons and hot ion plasma has been studied. This distribution function is reducible to anisotropic and loss-cone type for different values of spectral index j. The particle trajectories have been estimated and used to find the dispersion relation and growth rate by using the method of characteristic solutions. Temporal electromagnetic ion cyclotron instability for various plasma parameters has been studied. The role of choice of parameters, distribution function and simultaneous presence of A.C. electric field is studied for excitation of electromagnetic ion cyclotron instability. The results have been used to explain the satellite observations of AMPTE/CCE and compared with earlier work done for temperature anisotropy and other types of distribution functions using other techniques.

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Section: Resultsmentioning

confidence: 99%

“…A criterion for the upper frequency is obtained by using method similar to Cuperman and Landau [38,39] and from the resonant term appearing in denominator and occurring in plasma dispersion function as:…”

Section: Resultsmentioning

confidence: 99%

Study of Electromagnetic Ion-Cyclotron Instability in a Magnetoplasma

Pandey¹,

Singh²

2010

PIER M

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“…Grishanov (nikolay@lncc.br) netic theory of electromagnetic cyclotron waves/instabilities in the straight magnetic field plasma is well developed (see, e.g. the publications by Sagdeev and Shafranov, 1961;Cornwall, 1965;Kennel and Petschek, 1966;Horng, 1977;Cuperman, 1981;Gomberoff and Neira, 1983;Kozyra et al, 1984;Bespalov and Trakhtengerts, 1986;Bittencourt, 1986;Gary, 1993;Xue et al, 1996;Dasso et al, 2002;Khazanov et al, 2003;and bibliography therein). However, the models of uniform plasmas confined in the straight magnetic field are suitable to study the wave processes in the solar wind and quite rough for the planetary magnetospheres, which are three-dimensional in the general case.…”

Section: Introductionmentioning

confidence: 99%

Dispersion equations for field-aligned cyclotron waves in axisymmetric magnetospheric plasmas

et al. 2006

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Abstract. In this paper, we derive the dispersion equations for field-aligned cyclotron waves in two-dimensional (2-D) magnetospheric plasmas with anisotropic temperature. Two magnetic field configurations are considered with dipole and circular magnetic field lines. The main contribution of the trapped particles to the transverse dielectric permittivity is estimated by solving the linearized Vlasov equation for their perturbed distribution functions, accounting for the cyclotron and bounce resonances, neglecting the drift effects, and assuming the weak connection of the left-hand and right-hand polarized waves. Both the bi-Maxwellian and bi-Lorentzian distribution functions are considered to model the ring current ions and electrons in the dipole magnetosphere. A numerical code has been developed to analyze the dispersion characteristics of electromagnetic ion-cyclotron waves in an electron-proton magnetospheric plasma with circular magnetic field lines, assuming that the steady-state distribution function of the energetic protons is bi-Maxwellian. As in the uniform magnetic field case, the growth rate of the proton-cyclotron instability (PCI) in the 2-D magnetospheric plasmas is defined by the contribution of the energetic ions/protons to the imaginary part of the transverse permittivity elements. We demonstrate that the PCI growth rate in the 2-D axisymmetric plasmasphere can be significantly smaller than that for the straight magnetic field case with the same macroscopic bulk parameters.

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“…For reviews, a reader is referred to Davidson, 1 Gary, 2 Schwartz, 3 Cuperman, 4 and Marsch. 5 To date, there has been a good understanding of linear kinetic instabilities in plasmas with a bi-Maxwellian or a kappa distribution function, which is represented in variety of analytical and numerical studies.…”

Section: Introductionmentioning

confidence: 99%

Linear theory of low frequency magnetosonic instabilities in counterstreaming bi-Maxwellian plasmas

2015

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An effect of the bi-Maxwellian counterstreaming distribution function is analyzed with regard to the linear low frequency instabilities in magnetized homogeneous collisionless plasmas. New analytical marginal instability conditions for the firehose and the mirror modes have been obtained. Presence of counterstreams along the ambient magnetic field causes a huge effect on the instability conditions of those modes. The instability conditions very sensitively depend on the functional dependence of the counterstreaming parameter P. The theoretically predicted results might give a full potential explanation for the observed solar wind temperature anisotropy diagram in A-β∥ plane [S. D. Bale et al., Phys. Rev. Lett. 103, 211101 (2009)].

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Electromagnetic kinetic instabilities in multicomponent space plasmas: Theoretical predictions and computer simulation experiments

Cited by 75 publications

References 96 publications

Study of Electromagnetic Ion-Cyclotron Instability in a Magnetoplasma

Study of Electromagnetic Ion-Cyclotron Instability in a Magnetoplasma

Dispersion equations for field-aligned cyclotron waves in axisymmetric magnetospheric plasmas

Linear theory of low frequency magnetosonic instabilities in counterstreaming bi-Maxwellian plasmas

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