Abstract
We present the first observations of circular polarisation in type III bursts with spatial resolution in the range 164–435 MHz. We show that the degree of polarisation is in general neither constant nor uniform over burst extent, and increases with frequency. We discuss the observations and propose that they give access to the inhomogeneity of the coronal magnetic field and its variation with height.
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Benz, A. O., Treumann, R., Vilmer, N., Mangeney, A., Pick, M., and Raoult, A.: 1982, Astron. Astrophys. 108, 161.
Dumas, G., Caroubalos, C., and Bougeret, J. L.: 1982, Solar Phys. 81, 383.
Dulk, G. A. and McLean, D. J.: 1978, Solar Phys. 57, 279.
Lantos, P., Pick, M., and Kundu, M. R.: 1984, Astrophys. J. 283, L71.
Melrose, D. B., Dulk, G. A., Gary, D. E.: 1980, Proc. Astron. Soc. Australia 4, 50.
Mercier, C.: 1975, Solar Phys. 45, 169.
Mercier, C. and Rosenberg, H.: 1974, Solar Phys. 39, 193.
Roelof, E. C. and Pick, M.: 1989, Astron. Astrophys. 210, 417.
Suzuki, S. and Dulk, G. A.: 1985, in McLean and Labrum (eds.), Solar Radiophysics, Cambridge University Press, Cambridge.
The Radioheliograph Group: 1989, Solar Phys. 120, 193.
Trottet, G., Pick, M., House, L., Illing, R., Sawyer, C., and Wagner, W.: 1982, Astron. Astrophys. 111, 306.
Van den Oord, G. H. J.: 1990, Astron. Astrophys. 234, 496.
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Mercier, C. Polarisation of type III bursts between 164 and 435 MHz: Structure and variation with frequency. Sol Phys 130, 119–129 (1990). https://doi.org/10.1007/BF00156783
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DOI: https://doi.org/10.1007/BF00156783