Heliograph Observations of both Fast Drift (Type III) and Continuum (Type IV) Solar Emission from the one Source high above the Solar Limb
- 1 September 1976
- journal article
- research article
- Published by Cambridge University Press (CUP) in Publications of the Astronomical Society of Australia
- Vol. 3 (4) , 253-256
- https://doi.org/10.1017/s1323358000015447
Abstract
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.Keywords
This publication has 6 references indexed in Scilit:
- White light and radio studies of the coronal transient of 14?15 September 1973Solar Physics, 1976
- Radio Bursts from the Solar CoronaAnnual Review of Astronomy and Astrophysics, 1972
- Three-frequency Radioheliograph Observations of Solar Continuum EventsPublications of the Astronomical Society of Australia, 1971
- The influence of the ionized medium on synchrotron emission spectra in the solar coronaJournal of Geophysical Research, 1967
- The Speed and Acceleration of the Sources of Type III And Type V Solar Radio Bursts Over Large Distances in the CoronaAustralian Journal of Physics, 1965
- Solar BurstsAnnual Review of Astronomy and Astrophysics, 1963