Chiu, Y. T., Theory of Solar Radio Pulsation, Sol. Phys., 13, 420-443 (1970) (ADS)
(click on the image for a larger version)
An early cartoon depicting radio pulsations, with a physical mechanism
for something we might call QPP nowadays.
This preceded the theoretical work of Roberts.
It is of great relevance four decades later, as we appreciate
"coronal seismology" and have wonderful new radio facilities such
as the Jansky VLA, ALMA, EOVSA, LOFAR etc.
The point is that a pulsating structure will generate interesting
diagnostic patterns of radio intensity and polarization, spread
across the spectrum each with its own pattern embodied in the dependence
of the gyrosynchrotron emissivity on its particular variable.
We can expect a rich harvest of discovery, especially with X-ray or EUV observations
of the same pulsations.
An early cartoon depicting radio pulsations, with a physical mechanism for something we might call QPP nowadays. This preceded the theoretical work of Roberts. It is of great relevance four decades later, as we appreciate "coronal seismology" and have wonderful new radio facilities such as the Jansky VLA, ALMA, EOVSA, LOFAR etc. The point is that a pulsating structure will generate interesting diagnostic patterns of radio intensity and polarization, spread across the spectrum each with its own pattern embodied in the dependence of the gyrosynchrotron emissivity on its particular variable. We can expect a rich harvest of discovery, especially with X-ray or EUV observations of the same pulsations.