Earth, Moon, and Planets

, Volume 35, Issue 2, pp 93–115 | Cite as

A theory of Jovian shadow bursts

  • N. Gopalswamy


The shadow events in the dynamic spectra of Jovian decametric emission are explained as the result of interaction between electron bunches responsible for S and L emissions. The relevant dispersion relation is derived for the fast extraordinary mode in the cold magnetospheric plasma in the presence of S and L electron bunches. The growth rate of the synchrotron maser instability is studied in the presence and absence of S-electrons. It is shown that the synchrotron maser instability responsible for L-emission can be temporarily quenched by the invasion of S-electrons, thereby stopping the L-emission. The theory accounts for various observed features of the shadow events.


Growth Rate Dispersion Relation Observe Feature Dynamic Spectrum Electron Bunch 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Akhiezer, A. L., Akhiezer, I. A., Polovin, R. V., Sitenko, A. G., and Stepanov, K. N.: 1967, in Collective Oscillations in a Plasma, Pergamon Press, Oxford.Google Scholar
  2. Baldwin, E. D., Bernstein, I-B., and Weenik, M. P. H.: 1969, in Advances in Plasma Physics, Vol. 3, John Wiley, New York.Google Scholar
  3. Benz, A. O. and Kuijpers, J.: 1976, Solar Phys. 46, 275.Google Scholar
  4. Desch, M. D., Flagg, R. S., and May, J.: 1978, Nature 272, 38.Google Scholar
  5. Ellis, G. R. A.: 1973, Nature 241, 387.Google Scholar
  6. Flagg, R. S., Krausche, D. S., and Lebo, G. R.: 1976, Icarus 29, 477.Google Scholar
  7. Galeev, A. A. and Krasnoselskikh, V. V.: 1979, Sov. Astron. Lett. 5, 257.Google Scholar
  8. Ginzburg, V. L.: 1970, The Propagation of Electromagnetic Waves in Plasmas, Pergamon Press.Google Scholar
  9. Gordon, M. A.: 1966, Ph.D. Thesis, University of Colorado.Google Scholar
  10. Groth, M. J. and Dowden, R. L.: 1975, Nature 255, 382.Google Scholar
  11. Gurnett, D. A. and Goertz, C. K.: 1981, J. Geophys. Res. 86, 717.Google Scholar
  12. Hewitt, R. G., Melrose, D. B., and Ronnmark, K. G.: 1982, Aust. J. Phys. 35, 447.Google Scholar
  13. Hirshfild, J. L. and Bekefi, G.: 1963, Nature 198, 20.Google Scholar
  14. Krausche, D. S., Flagg, R. S., Lebo, G. R., and Smith, A. G.: 1976, Icarus 29, 463.Google Scholar
  15. Leblanc, Y., Aubier, M. G., Rosolen, C., Genova, F., and de la Noe, J.: 1980, Astron. Astrophys. 86, 349.Google Scholar
  16. Le Queau, D., Pellat, R., and Roux, A.: 1984, Phys. Fluids 27, 247.Google Scholar
  17. Melrose, D. B.: 1979, Astrophys. J. 230, 621.Google Scholar
  18. Melrose, D. B.: 1982, in A. O. Benz and P. Zlobec (eds.), Proceedings of the 4th CESRA Workshop on Solar Noise Storms, Trieste, p. 182.Google Scholar
  19. Pritchett, P. L.: 1984, J. Geophys. Res. 89, 8957.Google Scholar
  20. Riihimaa, J. J. and Warwick, J. W.: 1968, Astrophys. Lett. 2, 185.Google Scholar
  21. Riihimaa, J. J., Carr, T. D., Flagg, R. S., Greenman, W. B., Gombola, P. P., Lebo, G. R., and Levy, J. A.: 1981, Icarus 48, 298.Google Scholar
  22. Sharma, R. A., Vlahos, L., and Papadopoulos, K.: 1982, Astron. Astrophys. 112, 377.Google Scholar
  23. Smith, R. A.: 1976, in T. Gehrels (ed.), Jupiter, the Giant Planet, University of Arizone Press, Tucson.Google Scholar
  24. Staelin, D. H. and Rosenkranz, P. W.: 1983, M.L.T. Preprint.Google Scholar
  25. Stix, T.: 1962, The Theory of Plasma Waves, McGraw-Hill, New York.Google Scholar
  26. Wu, C. S. and Freund, H. P.: 1977, Astrophys. J. 213, 575.Google Scholar
  27. Wu, C. S. and Freund, H. P.: 1984, Radio Science 19, 519.Google Scholar

Copyright information

© D. Reidel Publishing Company 1986

Authors and Affiliations

  • N. Gopalswamy
    • 1
  1. 1.Indian Institute of AstrophysicsKodaikanalIndia

Personalised recommendations