Abstract
The broadband electrostatic turbulence generally observed in the high-latitude ionosphere is a superposition of nonlocal waves of ion-acoustic and ion-cyclotron types. In the presence of a shear of ion parallel velocity, ion-acoustic modes can be induced by an instability emerging due to an inhomogeneous distribution of energy density. This paper is devoted to the studies of excitation of oblique ion-acoustic wave in background configurations with inhomogeneous profiles of both electric field and ion parallel velocity. A numerical algorithm has been developed, and instability was simulated at various parameters of background plasma. The general possibility of oblique ion-acoustic wave generation by a gradient of ion parallel velocity is shown. In this case, the wave spectrum is found to be broadband, which agrees with satellite observations.
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Amatucci, W.E., Walker, D.N., Ganguli, G., Duncan, D., Antoniades, J.A., Bowles, J.H., Gavrishchaka, V., and Koepke, M.E., Velocity-shear-driven ion-cyclotron waves and associated transverse ion heating, J. Geophys. Res., 1998, vol. 103, pp. 11711–11724. doi 10.1029/98JA00659
Andre, M., Norqvist, P., Andersson, L., Eliasson, L., Eriksson, A.I., Blomberg, L., Erlandson, R.E., and Waldemark, J., Ion energization mechanisms at 1700 km in the auroral region, J. Geophys. Res., 1998, vol. 103, pp. 4199–4222. doi 10.1029/97JA00855
Bonnell, J., Kintner, P., Wahlund, J.-E., Lynch, K., and Arnoldy, R., Interferometric determination of broadband elf wave phase velocity within a region of transverse auroral ion acceleration, Geophys. Res. Lett., 1996, vol. 23, pp. 3297–3300. doi 10.1029/96GL03238
Chernyshov, A.A., Ilyasov, A.A., Mogilevsky, M.M., Golovchanskaya, I.V., and Kozelov, B.V., Vliyanie neodnorodnostei kontsentratsii plazmy i elektricheskogo polya na generatsiyu elektrostaticheskogo shuma v avroral’noi zone, Plasma Phys. Rep., 2015, vol. 41, no. 3, pp. 254–261.
Chernyshov, A.A., Ilyasov, A.A., Mogilevsky, M.M., Golovchanskaya, I.V., and Kozelov, B.V., Influence of inhomogeneities of the plasma density and electric field on the generation of electrostatic noise in the auroral zone, Cosmic Res., 2016, vol. 54, no. 1, pp. 52–60.
Ganguli, G. and Palmadesso, P.J., Electrostatic ion instabilities in the presence of parallel currents and transverse electric fields, Geophys. Res. Lett., 1998, vol. 15, pp. 103–106. doi 10.1029/GL015i001p00103
Ganguli, G., Lee, Y.C., and Palmadesso, P.G., Electrostatic ion-cyclotron instability caused by a nonuniform electric field perpendicular to the external magnetic field, Phys. Fluids, 1985, vol. 28, pp. 761–763.
Ganguli, G., Keskine, M.J., Romero, H., Heelis, R., Moore, T., and Pollock, C., Coupling of microprocesses and macroprocesses due to velocity shear: An application to the low-altitude ionosphere, J. Geophys. Res., 1994, vol. 99, pp. 8873–8889. doi 10.1029/93JA03181
Gavrishchaka, V., Koepke, M.E., and Ganguli, G., Dispersive properties of a magnetized plasma with a field-aligned drift and inhomogeneous transverse flow, Phys. Plasmas, 1996, vol. 3, pp. 3091–3106. doi 10.1063/1.871656
Gavrishchaka, V.V., Ganguli, S.B., and Ganguli, G.I., Origin of low-frequency oscillations in the ionosphere, Phys. Rev. Lett., 1998, vol. 80, pp. 728–731. doi 10.1103/PhysRevLett.80.728
Gavrishchaka, V.V., Ganguli, S.B., and Ganguli, G.I., Electrostatic oscillations due to filamentary structures in the magnetic-field-aligned flow: The ion-acoustic branch, J. Geophys. Res., 1999, vol. 104, no. A6, pp. 12683–12693. doi 10.1029/1999JA900094
Goebel, D.M. and Katz, I., Fundamentals of Electric Propulsion: Ion and Hall Thrusters, New Jersey: Wiley, 2008.
Golovchanskaya, I.V., Kozelov, B.V., and Despirak, I.V., Investigation of the broadband ELF turbulence by observations of the FAST satellite, Geomagn. Aeron. (Engl. Transl.), 2012, vol. 52, no. 4, pp. 474–481.
Golovchanskaya, I.V., Kozelov, B.V., Chernyshov, A.A., Mogilevsky, M.M., and Ilyasov, A.A., Branches of electrostatic turbulence inside solitary plasma structures in the auroral ionosphere, Phys. Plasmas, 2014a, vol. 21, no. 8, 082903. doi 10.1063/1.4891668
Golovchanskaya, I.V., Kozelov, B.V., Mingalev, I.V., Melnik, M.N., and Lubchic, A.A., Evaluation of a spaceobserved electric field structure for the ability to destabilize inhomogeneous energy-density-driven waves, Ann. Geophys., 2014b, vol. 32, pp. 1–6. doi 10.5194/angeo-32-1-2014
Ilyasov, A.A., Chernyshov, A.A., Mogilevsky, M.M., Golovchanskaya, I.V., and Kozelov, B.V., Inhomogeneities of plasma density and electric field as sources of electrostatic turbulence in the auroral region, Phys. Plasmas, 2015, vol. 22, no. 3, 032906. doi 10.1063/1.4916125
Kadomtsev, B.B., Mikhailovskii, A.B., and Timofeev, A.V., Waves with negative energy in dispersive media, Zh. Eksp. Teor. Fiz., 1964, vol. 47, pp. 2266–2269.
Kindel, J.M. and Kennel, C.F., Topside current instabilities, J. Geophys. Res., 1971, vol. 76, pp. 3055–3078. doi 10.1029/JA076i013p03055
Kintner, P.M., Franz, J., Schuc, P., and Klatt, E., Interferometric coherency determination of wavelength or what are broadband elf waves?, J. Geophys. Res., 2000, vol. 105, pp. 237–250. doi 10.1029/1999JA000323
Lund, E.J., On the dissipation scale of broadband elf waves in the auroral region, J. Geophys. Res., 2010, vol. 115, A01201. doi 10.1029/2009JA014545
Mikhailovskii, A.B., Teoriya plazmennykh neustoichivostei (Theory of Plasma Instabilities), vol. 1, Moscow: Atomizdat, 1975.
Stasiewicz, K., Khotyaintsev, Y., Berthomier, M., and Wahlund, J.-E., Identification of widespread turbulence of dispersive Alfvén waves, J. Geophys. Res., 2000, vol. 27, pp. 173–176. doi 10.1029/1999GL010696
Volwerk, M., Louarn, P., Chust, T., Roux, A., de Feraudy, H., and Holback, B., Solitary kinetic Alfvén waves: A study of the pointing flux, J. Geophys. Res., 1996, vol. 101, no. A6, pp. 13335–13343. doi 10.1029/96JA00166
Wahlund, J.-E., Louarn, P., Chust, T., et al., Observations of ion acoustic fluctuations in the auroral topside ionosphere by the FREJA S/C, Geophys. Res. Lett., 1994, vol. 21, pp. 1835–1838. doi 10.1029/94GL01290
Wahlund, J.-E., Eriksson, A.I., Holback, B., et al., Broadband ELF plasma emission during auroral energization: 1. Slow ion acoustic waves, J. Geophys. Res., 1998, vol. 103, no. A3, pp. 4343–4375.
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Original Russian Text © A.A. Chernyshov, A.A. Ilyasov, M.M. Mogilevsky, I.V. Golovchanskaya, B.V. Kozelov, 2017, published in Geomagnetizm i Aeronomiya, 2017, Vol. 57, No. 3, pp. 333–342.
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Chernyshov, A.A., Ilyasov, A.A., Mogilevsky, M.M. et al. Excitation of ion-acoustic waves in the high-latitude ionosphere. Geomagn. Aeron. 57, 308–316 (2017). https://doi.org/10.1134/S0016793217030045
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DOI: https://doi.org/10.1134/S0016793217030045