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Fig. 1

image

Top: background-subtracted type III flux profile around 48 MHz. The peak flux and HWHM points are shown as green circles. A Gaussian (red) and exponential (blue) fit are shown, together with their peak flux and HWHM. The Gaussian fit tracks the HWHM points in the data better, and the rise, peak, and decay times derived from the Gaussian fit are shown using the red dashed lines. Bottom: dynamic spectrum of the same burst. The drift of the rise, peak, and decay as a function of frequency are shown, together with the duration and bandwidth of the radio burst around 48 MHz.

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