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Fig. 2


Mean rise time (top) and decay time (bottom) as a function of frequency for all the analysed type III bursts as found from the HWHM, tr and td, respectively. The top and bottom blue dashed lines show the spread of the data, found from the standard deviation. The red dashed line show the fits tr = (1.5± 0.1) f−0.77±0.14 and td = (2.2 ± 0.2) f−0.89±0.15 for frequency (per 30 MHz). For the decay time, the green and orange dashed lines show the fits from Evans et al. (1973) and Alvarez & Haddock (1973a), respectively, assuming a HWHM of td = τd log(2), from the derived exponential profiles τd.

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