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Heliograph Observations of both Fast Drift (Type III) and Continuum (Type IV) Solar Emission from the one Source high above the Solar Limb

Published online by Cambridge University Press:  25 April 2016

R. A. Duncan
R. A. Duncan*
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

Many authors (e.g. Magun et al. 1975) have debated the question ‘does solar type IV continuum emission arise through Langmuir wave conversion or through gyro-synchrotron emission?’ Culgoora radio spectrograph and heliograph observations of the late stages of a recent (7 September 1977) type II, IV event showed both type IV* (continuum) and transient type III (electron-beam) emission coming from the same source, high above the solar limb. These observations suggest that this particular type IV continuum arose through a mechanism similar to that of the type III, probably fundamental Langmuir-wave emission, in a corona with a tenfold enhancement of plasma density.

Information

Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 3 , Issue 4 , 1978 , pp. 253 - 256
Copyright
Copyright © Astronomical Society of Australia 1978

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