Abstract
X-ray radiation is used to study coronal phenomena in conjunction with meter wave observations during some large solar flares. It is found that metric flare continua and moving type IV bursts are associated with gradual and long lasting (a few tens of minutes) microwave and hard X-ray emissions. The detailed temporal analysis reveals that although metric and hard X-ray sources are located at very different heights, both kinds of emission result from a common and continuous/repetitive injection of electrons in the corona. The late part of the metric event (stationary type IV burst) is only associated with soft X-ray radiation. This indicates that the mean energy of the radiating electrons is lower during stationary type IV bursts than during the earlier parts of the event.
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References
Anderson, K. A., Kane, S. R., Primbsh, J. H., Weitzman, R. H., Evans, W. D., Klebesadel, R. W., and Aiello, W. P.: 1978, IEEE Trans. GE-16, 157.
Frost, K. J.: 1974, in G. Newkirk (ed.), ‘Coronal Disturbances’, IAU Symp. 57, 421.
Frost, K. J. and Dennis, B. R.: 1971, Astrophys. J. 165, 655.
Hudson, H. S.: 1978, Astrophys. J. 224, 235.
Hudson, H. S., Lin, R. P., and Stewart, R. T.: 1982, Solar Phys. 75, 245.
Kane, S. R., Pick, M., and Raoult, A.: 1980, Astrophys. J. Letters 241, L113.
Kane, S. R., Fenimore, E. E., Klebesadel, R. W., and Laros, J. G.: 1982, Astrophys. J. Letters 254, L53.
Kosugi, T.: 1981, Solar Phys. 71, 91.
Krüger, A.: 1979, Introduction to Solar Radio Astronomy and Radio Physics, D. Reidel Publ. Co., Dordrecht, Holland.
Lantos, P., Kerdraon, A., Rapley, C. G., and Bentley, R. D.: 1981, Astron. Astrophys. 101, 33.
Pick, M.: 1961, Ann. Astrophys. 24, 183.
Radioheliograph Group: 1977, Solar Phys. 55, 251.
Robinson, R. D.: 1978, Australian J. Phys. 31, 553.
Stewart, R. T., Wolfson, C. J., and Lemen, J. R.: 1980, New Zealand Journal of Science.
Švestka, Z., Dennis, B. R., Pick, M., Raoult, A., Rapley, C. G., Stewart, R. T., and Woodgate, C. E.: 1982, Solar Phys. 80, 143.
Vilmer, N., Kane, S. R., and Trottet, G.: 1982, Astron. Astrophys. 108, 306.
Wild, J. P.: 1970, Proc. Astron. Soc. Australia 1, 365.
Wild, J. P., Smerd, S. F., and Weiss, A. A.: 1963, Ann. Rev. Astron. Astrophys. 1, 291.
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Klein, L., Anderson, K., Pick, M. et al. Association between gradual hard X-Ray emission and metric continua during large flares. Sol Phys 84, 295–310 (1983). https://doi.org/10.1007/BF00157463
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DOI: https://doi.org/10.1007/BF00157463