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Interpretation of a Correlation between the Flux Densities of Extended Hard X-ray and Microwave Solar Bursts

Published online by Cambridge University Press:  25 April 2016

G. J. Nelson  and
R. T. Stewart
G. J. Nelson
Affiliation:
Division of Radiophysics, CSIRO, Sydney
R. T. Stewart
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

In a previous paper of this issue (Stewart and Nelson 1979 — Paper A) we showed that for extended bursts a good correlation exists between the observed 100 keV X-ray slux density and the 3.75 or 9.4 GHz microwave flux density. We also showed that the microwave spectrum of these bursts was much flatter (S ∝ f1.0 on the average) than the optically thick (self-absorbed) spectrum observed for impulsive microwave bursts (Crannell et al. 1978; Dulk et al. 1978). Furthermore, the microwave turnover frequency was > 10 GHz in eight of the nine events studied and <20 GHz in four of these cases. The remaining event, which was severely occulted by the solar limb, had a turnover frequency of ∽ 1 GHz.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 3 , Issue 6 , 1979 , pp. 392 - 395
Copyright
Copyright © Astronomical Society of Australia 1979

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References

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