Waves and Particles in the Magnetosphere

  • James W. Dungey
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 10)


My first topic will be to discuss the propagation of hydromagnetic waves in the magnetosphere and consider a mechanism for generating them at the magnetospheric boundary. Unfortunately this topic is highly speculative; a condition which results from the lack of experimental data. As a consequence of Van Allen’s discovery of the radiation belts, experimentalists, for the past decade, have been investigating the charged-particle population of the magnetosphere. Hopefully, future experimenters will give the wave aspects of the magnetosphere the attention they warrant. It is only in this way that our understanding of the magnetosphere will be developed fully. My discussion will proceed in the following manner. We shall consider (1) hydromagnetic waves in a uniform magnetic field ; (2) hydromagnetic waves in an axially symmetric magnetic field; and (3) the Kelvin-Helmholtz instability. In other words, we begin with an elementary topic and progress to a condition, which although idealized, is representative of the magnetosphere. Finally we shall discuss a problem which is far from being resolved — the Kelvin-Helmholtz instability as it applies to the boundary of the magnetosphere and serves as a source of (highly asymmetric) hydromagnetic waves.


Solar Wind Wave Packet Current Sheet Pitch Angle Auroral Oval 
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Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1968

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  • James W. Dungey

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