Role of the Universal Instability in Auroral Phenomena

  • N. D’angelo
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 14)


The role of the ‘universal’ instability in auroral phenomena is discussed. Excitation of the instability in the non-homogeneous magnetospheric plasma at R E ≈ 6 may modulate particle precipitation into the ionospheric auroral regions and account for some of the observations on pulsating (optical) auroras and X-ray pulsations. It is shown that a good correlation exists between the temporal and spatial variations of particles precipitation and the properties that might reasonably be expected from a drift wave model.


Particle Precipitation Geomagnetic Latitude Auroral Zone Magnetospheric Plasma Instability Theory 
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Copyright information

© Springer Science+Business Media Dordrecht 1969

Authors and Affiliations

  • N. D’angelo
    • 1
  1. 1.European Space Research Institute (ESRIN)Frascati (Rome)Italy

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