Influence of inhomogeneities of the plasma density and electric field on the generation of electrostatic noise in the auroral zone

Journal Article · Sun Mar 15 00:00:00 EDT 2015 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X15030010· OSTI ID:22472419

Chernyshov, A. A., E-mail: [e-mail]; Ilyasov, A. A., E-mail: [e-mail]; Mogilevskii, M. M., E-mail: [e-mail] ^[1]; Golovchanskaya, I. V., E-mail: [e-mail]; Kozelov, B. V., E-mail: [e-mail] ^[2]

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1. Russian Academy of Sciences, Space Research Institute (Russian Federation)
2. Russian Academy of Sciences, Polar Geophysical Institute (Russian Federation)

In order to study instabilities caused by inhomogeneities of the electric field and plasma density in the auroral zone, numerical algorithms are developed and numerical simulations are performed for different conditions in the background plasma. To this end, a nonlocal dispersion relation for a given type of wave is analyzed. It is shown that the dispersion relation has unstable solutions in a wide range of frequencies and wavenumbers. These solutions manifest themselves in satellite observations as a broadband spectrum of electrostatic perturbations. Two mechanisms of broadband noise generation related to the gradients of the density and electric field are compared.

• OSTI ID: 22472419
• Journal Information: Plasma Physics Reports, Vol. 41, Issue 3; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALGORITHMS
AURORAL ZONES
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DISPERSION RELATIONS
DISTURBANCES
ELECTRIC FIELDS
ELECTROSTATICS
INHOMOGENEOUS PLASMA
PLASMA DENSITY