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Generation of auroral kilometric radiation in inhomogeneous magnetospheric plasma

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Abstract

The generation of auroral kilometric radiation in a narrow 3D plasma cavity, in which a weakly relativistic electron flow is propagated along the magnetic field against a low-density cold background plasma, is studied. The time dynamics of the propagation and intensification of waves are analyzed using geometric optics equations. The waves have different wave vector components and start from the cavity center at an altitude of about the Earth’s radius at plasma parameters typical for the auroral zone at this altitude. It is shown that the global inhomogeneity of the Earth’s magnetic field is of key importance in shaping the auroral kilometric radiation spectra.

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Authors and Affiliations

  1. Space Research Institute, Russian Academy of Sciences, Moscow, 117997, Russia

    T. M. Burinskaya & M. M. Shevelev

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  1. T. M. Burinskaya
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  2. M. M. Shevelev
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Correspondence to T. M. Burinskaya.

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Original Russian Text © T.M. Burinskaya, M.M. Shevelev, 2017, published in Geomagnetizm i Aeronomiya, 2017, Vol. 57, No. 1, pp. 19–27.

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Burinskaya, T.M., Shevelev, M.M. Generation of auroral kilometric radiation in inhomogeneous magnetospheric plasma. Geomagn. Aeron. 57, 16–23 (2017). https://doi.org/10.1134/S0016793217010030

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