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Positions of the Fundamental and Harmonic Sources of a Type II Solar Burst

Published online by Cambridge University Press:  25 April 2016

G. A. Dulk
G. A. Dulk*
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

Type II solar bursts characteristically drift slowly from high to low frequencies at a rate of about 0.1 MHz/s, appear only at frequencies lower than 250 MHz, and frequently have harmonic structure, i.e. there are identifiable spectral features within the fundamental which are duplicated at twice the frequency. Thus it is clear that at least in some cases, true harmonic radiation is involved; the source region emits frequencies f and 2f simultaneously.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 7 , April 1970 , pp. 308 - 310
Copyright
Copyright © Astronomical Society of Australia 1970

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