Abstract
Solar type III bursts have been observed at fixed frequencies of 18, 22, 26 and 36 MHz during the period 1970–1974. 103 profiles have been analyzed in the manner introduced by Aubier and Boischot (1972) whose results are generally confirmed. Average values for the exciter function duration were found for each frequency to be respectively 16.6, 14.7, 10.2 and 8.1 s, and for the decay time constant 3.6, 3.1, 2.3 and 1.8 s. Average peak-to-peak frequency drifts were found to be - 1.9,- 2.1, and - 3.5 MHz s−1 for centre frequencies of 20, 22, and 31 MHz, respectively. The decay time-constant appears to bear approximately the same linear relationship to the exciter function duration at each of the four frequencies studied.
Similar content being viewed by others
References
Achong, A.: 1974, Solar Phys. 37, 477.
Achong, A. and Barrow, C. H.: 1975, Solar Phys., this issue, p. 467.
Alexander, J. K., Malitson, H. H., and Stone, R. G.: 1969, Solar Phys. 8, 388.
Alvarez, H. and Haddock, F. T.: 1973, Solar Phys. 29, 197.
Aubier, M. and Boischot, A.: 1972, Astron. Astrophys. 19, 343.
Barrow, C. H. and Saunders, H.: 1972, Astrophys. Letters 12, 211.
Boischot, A.: 1967, Ann. Astrophys. 30, 85.
De Groot, T.: 1966, Rech. Astron. Obs. Utrecht 18, No. 1.
Evans, L. G., Fainberg, J., and Stone, R. G.: 1973, Solar Phys. 31, 501.
Fainberg, J. and Stone, R. G.: 1974, Space Sci. Rev. 16, 145.
Hartz, T. R.: 1969, Planetary Space Sci. 17, 267.
Kundu, M. R.: 1965, Solar Radio Astronomy, New York, Interscience.
Solar Radio Group Utrecht: 1974, Space Sci. Rev. 16, 45.
Wild, J. P., Smerd, S. F., and Weiss, A. A.: 1963, Ann. Rev. Astron. Astrophys. 1, 291.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Barrow, C.H., Achong, A. Solar type III burst profiles at decametre-wave frequencies. Sol Phys 45, 459–465 (1975). https://doi.org/10.1007/BF00158462
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00158462