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Magnetospheric Dynamics and Wave-Particle Interactions

  • Frederick L. Scarf
  • Christopher T. Russell
Part of the Astrophysics and Space Science Library book series (ASSL, volume 57)

Abstract

It has been demonstrated that two general classes of wave-particle interactions are of great importance for magnetospheric dynamics. Electromagnetic and electrostatic plasma instabilities give rise to relatively narrow-banded spontaneous emissions (e.g. ELF hiss, chorus, three-halves noise, ion cyclotron and ion-plasma-frequency turbulence) that can scatter trapped particles into the loss cone, leading to modified pitch-angle distributions, stable trapping limits, diffuse aurora, proton precipitation events, etc. The current-driven plasma instabilities give rise to impulsive ion acoustic or Buneman mode turbulence that provides very effective energy transfer (via the anomalous conductivity mechanism) at the bow shock and in regions where strong field-aligned currents are observed. We review these interactions and identify significant open questions that must be investigated during the IMS.

Keywords

Plasma Sheet Plasma Instability Electrostatic Wave Parallel Electric Field Anomalous Resistivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1976

Authors and Affiliations

  • Frederick L. Scarf
    • 1
  • Christopher T. Russell
    • 2
  1. 1.Space Sciences DepartmentSystems Group of TRW Inc.Redondo BeachUSA
  2. 2.Institute of Geophysics & Planetary PhysicsUniversity of CaliforniaLos AngelesUSA

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