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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)

Abstract

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.

Keywords

Particle Precipitation Geomagnetic Latitude Auroral Zone Magnetospheric Plasma Instability Theory 
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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References

  1. Anderson, K. A., Chase, L. M., Hudson, H. S., Lampton, M., Milton, D. W., and Parks, G. K.: 1966, ‘Balloon and Rocket Observations of Auroral-Zone Microbursts’, J. Geophys. Res. 71, 4617–4629.ADSCrossRefGoogle Scholar
  2. Anger, C. D., Barcus, J. R., Brown, P. R., and Evans, D. S.: 1963, ‘Auroral Zone X-Ray Pulsations in the 1- to 15-Second Period Range’, J. Geophys. Res. 68, 1023–1030.ADSCrossRefGoogle Scholar
  3. Barcus, J. R. and Christensen, A.: 1965, ‘A 75-Second Periodicity in Auroral-Zone X-Rays’, J. Geophys. Res. 70, 5455–5459.ADSCrossRefGoogle Scholar
  4. Barcus, J. R. and Rosenberg, T. J.: 1965, ‘Observations on the Spatial Structure of Pulsating Electron Precipitation Accompanying Low-Frequency Hydromagnetic Disturbances in the Auroral Zone’, J. Geophys. Res. 70, 1707–1716.ADSCrossRefGoogle Scholar
  5. Barcus, J. R., Brown, R. R., and Rosenberg, T. J.: 1966, ‘Spatial and Temporal Character of Fast Variations in Auroral-Zone X-Rays’, J. Geophys. Res. 71, 125–141.ADSCrossRefGoogle Scholar
  6. Brönstad, K. and Trefall, H.: 1968, ‘East-West Movements of Pulsating Auroral-Zone X-Ray Events’, J. Atm. Terr. Phys 30, 205–212.ADSCrossRefGoogle Scholar
  7. Brown, R. R., Barcus, J. R., and Parsons, N. R.: 1965, ‘Balloon Observations of Auroral Zone X-Rays in Conjugate Regions’, J. Geophys. Res. 70, 2599–2612.ADSCrossRefGoogle Scholar
  8. Brown, R. R. and Weir, R. A.: 1967, ‘Energy-Dependent Modulation in Auroral X-Ray Pulsations’, J. Geophys. Res. 72, 5531–5536.ADSCrossRefGoogle Scholar
  9. Buchelnikova, N. S.: 1964, ‘Universal Instability in a Potassium Plasma’, Nucl. Fusion 4, 165–168.CrossRefGoogle Scholar
  10. Chen, F.F.: 1964, ‘Normal Modes for Electrostatic Ion Waves in an Inhomogeneous Plasma’, Phys. Fluids 7, 949–955.ADSCrossRefGoogle Scholar
  11. Cresswell, G. R. and Davis, T. N.: 1966, ‘Observations on Pulsating Auroras’, J. Geophys. Res. 71, 3155–3163.ADSCrossRefGoogle Scholar
  12. D’Angelo, N., Eckhartt, D., Grieger, G., Guilino, E., and Hashmi, N.: 1963, ‘Excitation of Low-Frequency Waves in a Curved Magnetic Field Geometry’, Phys. Rev. Letters 11, 525–527.ADSCrossRefGoogle Scholar
  13. D’Angelo, N. and Motley, R. W.: 1963, ‘Low-Frequency Oscillations in a Potassium Plasma’, Phys. Fluids 6, 422–425.ADSCrossRefGoogle Scholar
  14. D’Angelo, N. and Von Goeler, S.: 1966, ‘Cesium Plasmas in a Magnetic Field with Variable Curvature’, Nucl. Fusion 6, 135–143.CrossRefGoogle Scholar
  15. Evans, D.S.: 1963, ‘A Pulsating Auroral-Zone X-Ray Event in the 100-Second Period Range’, J. Geophys. Res. 68, 395–400.ADSCrossRefGoogle Scholar
  16. Frank, L. A.: 1967, ‘Several Observations of Low-Energy Protons and Electrons in the Earth’s Magnetosphere with OGO-3’, J. Geophys. Res. 72, 1905–1916.ADSCrossRefGoogle Scholar
  17. Hendel, H. W., Coppi, B., Perkins, F., and Politzer, P. A.: 1967, ‘Collisional Effects in Plasma-Drift-Wave Experiments and Interpretation’, Phys. Rev. Letters 18, 439–442.ADSCrossRefGoogle Scholar
  18. Krall, N. A. and Rosenbluth, M. N.: 1965, ‘Universal Instability in Complex Field Geometries’, Phys. Fluids 8, 1488–1503.CrossRefGoogle Scholar
  19. Lashinsky, H.: 1964, ‘Universal Instability in a Fully Ionized Inhomogeneous Plasma’, Phys. Rev. Letters 12, 121–123.ADSCrossRefGoogle Scholar
  20. Mikhailovskii, A. B. and Rudakov, L. I.: 1963, ‘The Stability of a Spatially Inhomogeneous Plasma in a Magnetic Field’, JETP 17, 621–625.Google Scholar
  21. Milton, D. W. and Oliven, M. N.: 1967, ‘Simultaneous Satellite and Balloon Observations of the Same Auroral-Zone Precipitation Event’, J. Geophys. Res. 72, 5357–5361.ADSCrossRefGoogle Scholar
  22. Parks, G. K.: 1967, ‘Spatial Characteristics of Auroral-Zone X-Ray Microbursts’, J. Geophys. Res. 72, 215–226.ADSCrossRefGoogle Scholar
  23. Rosenbluth, M. N.: 1965, ‘Microinstabilities in Plasma Physics’, Int. Atomic Energy Agency (IAEA), Vienna 1965.Google Scholar
  24. Swift, D. W.: 1967, ‘A New Interpretation of Long-Period Micropulsations’, J. Geophys. Res. 72, 4885–4898.ADSCrossRefGoogle Scholar

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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