Solar Physics

, Volume 128, Issue 2, pp 377–397 | Cite as

Multiple moving magnetic structures in the solar corona

  • N. Gopalswamy
  • M. R. Kundu


We report the study of moving magnetic structures inferred from the observations of a moving type IV event with multiple sources. The ejection contains at least two moving radio emitting loops with different relative inclinations. The radio loops are located above multiple Hα flare loops in an active region near the limb. We investigate the relationship between the two systems of loops. The spatial, temporal and geometrical associations between the radio emission and near surface activities suggest a scenario similar to coronal mass ejection (CME) events, although no CME observations exist for the present event. From the observed characteristics, we find that the radio emission can be interpreted as Razin suppressed optically thin gyrosynchrotron emission from nonthermal particles of energy ∼ 100, keV and density ∼ 102–105 cm−3 in a magnetic field ≤ 2 G.


Magnetic Field Flare Active Region Surface Activity Multiple Source 
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. Altrock, D.: 1989, private communication.Google Scholar
  2. Dulk, G. A.: 1973,Solar Phys. 32, 491.Google Scholar
  3. Dulk, G. A.: 1980, in M. R. Kundu and T. E. Gergely (eds.),Radio Physics of the Sun, D. Reidel Publ. Co., Dordrecht, Holland, p. 419.Google Scholar
  4. Dulk, G. A.: 1985,Ann. Rev. Astron. Astrophys. 23, 169.Google Scholar
  5. Dulk, G. A. and McLean, D. J.: 1978,Solar Phys. 57, 279.Google Scholar
  6. Gary, D. E., Dulk, G. A., House, L., Illing, R., Sawyer, C., Wagner, W. J., McLean, D. J., and Hildner, E.: 1984,Astron. Astrophys. 134, 222.Google Scholar
  7. Gary, D. E., Dulk, G. A., House, L. L., Illing, R., Wagner, W. J., and McLean, D. J.: 1985,Astron. Astrophys. 152, 42.Google Scholar
  8. Gergely, T. E., Kundu, M. R., Erskine, F. T., Sawyer, C., Wagner, W. J., Illing, R. M. E., House, L. L., McCabe, M. K., Stewart, R. T., Nelson, G. J., Koomen, M. J., Michels, D., Howard, R., and Sheeley, N.: 1984,Solar Phys. 90, 161.Google Scholar
  9. Gopalswamy, N. and Kundu, M. R.: 1987,Solar Phys. 114, 347.Google Scholar
  10. Gopalswamy, N. and Kundu, M. R.: 1989,Solar Phys. 122, 145.Google Scholar
  11. Harrison, R. A.: 1986,Astron. Astrophys. 162, 283.Google Scholar
  12. Harrison, R. A. and Sime, S. G.: 1989,J. Geophys. Res. 94, 2333.Google Scholar
  13. Harrison, R. A., Hildner, E., Hundhausen, A. J., Sime, S. G., and Simnett, G. M.: 1989,Astron. Astrophys. (in press).Google Scholar
  14. Hildner, E. and 20 co-authors: 1986, in M. R. Kundu and B. Woodgate (eds.),Energetic Phenomena on the Sun, NASA Conference Publication No. 2439, p. 6-1.Google Scholar
  15. Hundhausen, A. J.: 1988, in V. J. Pizzo, T. E. Holzer, and D. G. Sime (eds.),Proc. Sixth International Solar Wind Conference, NCAR/TN-306 + PROC, National Center for Atmospheric Research, Boulder, Colorado, p. 181.Google Scholar
  16. Kai, K.: 1978,Solar Phys. 56, 417.Google Scholar
  17. Klein, K.-L.: 1987,Astron. Astrophys. 183, 341.Google Scholar
  18. Kundu, M. R.: 1961,J. Geophys. Res. 66, 3208.Google Scholar
  19. Kundu, M. R.: 1987,Solar Phys. 111, 53.Google Scholar
  20. Kundu, M. R.: 1982,Rep. Prog. Phys. 45, 1435.Google Scholar
  21. Kundu, M. R., Erickson, W. C., Gergely, T. E., Mahoney, M. J., and Turner, P. J.: 1983,Solar Phys. 83, 385.Google Scholar
  22. Kundu, M. R., Gopalswamy, N., White, S. M., Cargill, P., Schmahl, E. J., and Hildner, E.: 1989,Astrophys. J. 347, 505.Google Scholar
  23. Melrose, D. B.: 1985, in D. J. McLean and N. R. Labrum (eds.),Solar Radio Physics, Cambridge University Press, Cambridge, Chap. 9, p. 210.Google Scholar
  24. Melrose, D. B. and Dulk, G. A.: 1988,Solar Phys. 116, 141.Google Scholar
  25. Nelson, G. J.: 1977,Proc. Astron. Soc. Australia 3, 159.Google Scholar
  26. Nelson, J.: 1989, private communication.Google Scholar
  27. Newkirk, G. J.: 1967,Ann. Rev. Astron. Astrophys. 5, 213.Google Scholar
  28. Ramaty, R.: 1969,Astrophys. J. 183, 753.Google Scholar
  29. Riddle, A. C. and Sheridan, K. V.: 1971,Proc. Astron. Soc. Australia 2, 62.Google Scholar
  30. Robinson, R. D.: 1985, in D. J. McLean and N. R. Labrum (eds.),Solar Radio Physics, Cambridge University Press, Cambridge, Chap. 15, p. 385.Google Scholar
  31. Robinson, R. D., Tuxford, J. M., Sheridan, K. V., and Stewart, R. T.: 1983,Proc. Astron. Soc. Australia 5, 84.Google Scholar
  32. Schmahl, E. J.: 1973,Australian J. Phys. Suppl. No. 29, p. 1.Google Scholar
  33. Smerd, S. F. and Dulk, G. A.: 1971, in R. Howard (ed.), ‘Solar Magnetic Fields’,IAU Symp. 43, 616.Google Scholar
  34. Stewart, R. T., Dulk, G. A., Sheridan, K. V., House, L. L., Wagner, W. J., Sawyer, C., and Illing, R.: 1982,Astron. Astrophys. 116, 217.Google Scholar
  35. Stewart, R. T.: 1985, in D. J. McLean and N. R. Labrum (eds.),Solar Radio Physics, Cambridge University Press, Cambridge, Chap. 14, p. 361.Google Scholar
  36. Švestka, Z.: 1983,Space Sci. Rev. 35, 259.Google Scholar
  37. Švestka, Z., Stewart, R. T., Hoyng, P., van Tend, W., Acton, L. W., Gabriel, A. H., Rapley, C. G., and 8 co-authors: 1982,Solar Phys. 75, 305.Google Scholar

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • N. Gopalswamy
    • 1
  • M. R. Kundu
    • 1
  1. 1.Astronomy ProgramUniversity of MarylandCollege ParkUSA

Personalised recommendations