Abstract
We report on the structure and geometry of coronal magnetic fields inferred from the observations of meter-decimeter type III and moving type IV radio bursts, associated with a Hα flare. This is the first report of type III radio bursts from the Nançay radioheliograph after it acquired the two-dimensional multifrequency capability. Dispersion of the radio source positions with frequency suggests that open and closed field lines are considerably inclined to the radial direction which is consistent with the connectivity observed in the magnetogram. We suggest that multiple arch systems are involved in the type IV emission. From the polarization and dispersion characteristics of the type IV source, we infer that the emission is due to fundamental plasma emission.
Similar content being viewed by others
Reference
Duncan, R. A.: 1978,Proc. Astron. Soc. Australia 3, 253.
Gopalswamy, N. and Kundu, M. R.: 1987,Solar Phys. 114, 347.
Gopalswamy, N. and Kundu, M. R.: 1989,Solar Phys. 122, 91.
Gopalswamy, N. and Kundu, M. R.: 1990,Solar Phys. 128, 377.
Gopalswamy, N., Kundu, M. R., and Szabo, A.: 1987,Solar Phys. 108, 333.
Kundu, M. R., Gergely, T. E., Turner, P. J., and Howard, R. A.: 1983,Astrophys. J. 269, 167.
Lantos, P., Pick, M., and Kundu, M. R.: 1984,Astrophys. J. 283, L71.
Mercier, C.: 1975,Solar Phys. 46, 169.
Raoult, A. and Pick, M.: 1980,Astron. Astrophys. 87, 63.
The Radioheliograph Group: 1989,Solar Phys. 120, 193.
The Radioheliograph Group: 1993,Solar Phys., in preparation.
Trottet, G., Pick, M., House, L., Illing, R., Sawyer, C., and Wagner, W.: 1982,Astron. Astrophys. 111, 306.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gopalswamy, N., Kundu, M.R., Raoult, A. et al. Non-radial magnetic field structures in the solar corona. Sol Phys 150, 317–323 (1994). https://doi.org/10.1007/BF00712893
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00712893