Fig. 1.
Panel a: dynamic spectrum obtained from UTR-2 on 9 July 2013 containing examples of type III, type IIIb, and S-bursts. Several negatively drifting S-bursts are shown within the highlighted region between the times of 08:43:26 UT and 08:43:36 UT and the frequency range of 18–19.5 MHz. A type III burst is also visible in this time frame. A type IIIb burst is visible between the times of 08.43.41 UT and 08.43.46 UT. Panel b: the highlighted region is shown in greater detail, indicating the short duration of the bursts (<1 s). Colour bars indicate the flux values of the bursts in solar flux units.
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