Abstract

The stability of a steady finite-amplitude whistler wave penetrating a collisionless, unbounded, homogeneous plasma is studied. The supporting wave as well as the excited side-band waves are assumed to propagate parallel to an uniform magnetostatic field B0. For a general form of the distribution function of trapped electrons, the growth (damping) rates of side-band modes are calculated.It is shown that a particular distribution of trapped electrons gives rise to strongly unstable side-band electromagnetic modes having right-hand polarization. The spectrum of unstable electrostatic and electromagnetic satellite waves is analyzed.

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