Generation of Low Frequency Electromagnetic Wave by Injection of Cold Electron for Relativistic and Non- Relativistic Subtracted Bi-Maxwellian Distribution With Perpendicular Ac Electric Field for Magnetosphere of Uranus

Pandey, R. S.; Kaur, Rajbir

doi:10.2528/pierb12091803

Cited by 9 publications

(2 citation statements)

References 18 publications

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“…where the dimensionless growth rate and real frequency are defined as c 2 is ignored, the Equation (14) reduces to expression of nonrelativistic growth rate, comparable to work done by Pandey and Kaur [23] using bi-Maxwellian distribution function. Where…”

Section: Dispersion Relation and Growth Ratementioning

confidence: 99%

Study of Whistler Mode Wave by Injection of Relativistic Hot Electrons Beam in the Magnetosphere of Uranus

Pandey¹,

Kaur²

2014

PIER M

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Abstract-In present paper, the effect of relativistic hot electron beam for field aligned Whistler mode waves has been studied theoretically in the presence of AC electric field perpendicular to magnetic field. Studies have been performed using perturbative approach along with the method of characteristic solutions and are valid for comparatively small ambient magnetic field of Uranus, of the order of nano Tesla, as observed by Voyager 2. The detailed derivation and calculations has been done for dispersion relation and growth rate for magnetosphere of Uranus. Analyses are done by changing various plasma parameters which are explained in result and discussions section of this paper. Extensive study of waveparticle interactions and numerical calculations concludes that in case of injection of a distribution of particles having a positive slope in v ⊥ , temperature anisotropy remains the main source of free energy. It is seen that other effective parameters for the growth of whistler mode waves are AC frequency and higher number density of hot electrons. We also learn that even the minimal presence of such energetic particles having a positive slope of distribution function and increasing power of perpendicular thermal velocity can increase the growth rate significantly in the magnetosphere of Uranus. The present work is basically based upon the theoretical investigation and mathematical analysis of the magnetosphere of Uranus, supported by satellite data.

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Section: Dispersion Relation and Growth Ratementioning

confidence: 99%

Study of Whistler Mode Wave by Injection of Relativistic Hot Electrons Beam in the Magnetosphere of Uranus

Pandey¹,

Kaur²

2014

PIER M

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“…Their study concluded that the dynamo-driven magnetic field aligned current in the ionosphere produce plasma instabilities which produces increase in resistivity with a resulting electric field. In presence of similar perpendicular AC electric field of Uranus, [26] investigated whistler mode waves for subtracted bi-Maxwellian plasma in the magnetosphere [27]. Analyzing the growth rate, showed that either the loss-cone or the temperature anisotropy in the hot plasma component leads to generation of low frequency whistler mode emissions.…”

Section: Introductionmentioning

confidence: 99%

Study of Electron Beam on Electron Cyclotron Waves with AC Field in the Magnetosphere of Uranus

Kaur¹,

Pandey²

2017

AEM

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In this paper, we investigate the electromagnetic electron cyclotron (EMEC) waves in the magnetosphere of Uranus. By using the method of characteristic solution, the expression for dispersion relation is drawn. Following kinetic approach, the growth rate and real frequency of EMEC waves is studied theoretically, considering the injection of cold plasma beam in the Uranian system. The observations made by a space probe launched by NASA, Voyager 2, showed unusual orientation of planet’s spin axis and presence of more particles in high energy tail in Uranian magnetospheric plasma. Therefore, in this paper Kappa distribution is employed instead of usual Maxwellian distribution. The study is extended to the parallel as well as the oblique propagation of EMEC waves with variation in temperature anisotropy, number density of electrons and angle of propagation with respect to magnetic field direction. It is found that these parameters support the growth rate of EMEC waves. But response of real frequency of these waves is not same as that of growth rate for all the cases. Numerical analysis also revealed that as the ratio of number density of cold to hot plasma increases growth rate of EMEC waves also increases. Thus, denser the beam is injected, more the growth can be observed. These results are appropriate for applications to space plasma environments and magnetospheric regimes for detailed comparative planetary study.

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Study of relativistic beam of electron on whistler mode waves for subtracted distribution in Saturnian magnetosphere

Shukla

Singh

Pandey

2019

Astrophys Space Sci

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Generation of Low Frequency Electromagnetic Wave by Injection of Cold Electron for Relativistic and Non- Relativistic Subtracted Bi-Maxwellian Distribution With Perpendicular Ac Electric Field for Magnetosphere of Uranus

Cited by 9 publications

References 18 publications

Study of Whistler Mode Wave by Injection of Relativistic Hot Electrons Beam in the Magnetosphere of Uranus

Study of Whistler Mode Wave by Injection of Relativistic Hot Electrons Beam in the Magnetosphere of Uranus

Study of Electron Beam on Electron Cyclotron Waves with AC Field in the Magnetosphere of Uranus

Study of relativistic beam of electron on whistler mode waves for subtracted distribution in Saturnian magnetosphere

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