Features of wave excitation of the electrostatic ion cyclotron type in the auroral ionosphere

Broadband electrostatic noise in the auroral ionosphere can be identified as a version of waves of an electrostatic ion cyclotron type, excited by plasma instability resulting from an inhomogeneous distribution of wave energy density. Broadband waves are generated due to both electric field inhomoge...

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Bibliographic Details
Published inCosmic research Vol. 54; no. 1; pp. 52 - 60
Main Authors Chernyshov, A. A., Ilyasov, A. A., Mogilevsky, M. M., Golovchanskaya, I. V., Kozelov, B. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.01.2016
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Astroparticles
Astrophysics and Cosmology
Auroral ionosphere
Auroral zones
Broadband
Cyclotrons
Electric fields
Electric power distribution
Electrostatics
Energy distribution
Flux density
Inhomogeneities
Inhomogeneity
Instability
Ion cyclotron waves
Ionosphere
Ions
Magnetohydrodynamic stability
Mathematical models
Physics
Physics and Astronomy
Plasma
Plasma density
Plasma instabilities
Satellite data
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Stability
Wave energy
Wave excitation
Wave power
Cosmic Research
Auroral Zone
Plasma Density
Auroral Region
Weak Electric Field
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Summary:Broadband electrostatic noise in the auroral ionosphere can be identified as a version of waves of an electrostatic ion cyclotron type, excited by plasma instability resulting from an inhomogeneous distribution of wave energy density. Broadband waves are generated due to both electric field inhomogeneities and plasma density inhomogeneities. The effect of the form of the distribution of electric field and plasma density inhomogeneities on the excitation of instabilities is studied. Also there is shown the role of the characteristic scale of inhomogeneities in the generation of electrostatic ion cyclotron waves due to the development of instability of this kind. The study of these issues, which are important for understanding the processes in the auroral region, is the subject of this paper. The work presents also a comparison of numerical results obtained using both satellite data and model approximations.
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ISSN:0010-9525
1608-3075
DOI:10.1134/S0010952516010044