Type III solar bursts detected on September 29, 1997. The bursts display a slow negative frequency drift rate of about 1MHz/sec. Horizontal lines at constant frequency are radio station interference. Vertical lines are caused by terrestrial lightning.

 
Type III solar burst detected on Sept. 29, 1997 about19 minutes earlier that the above bursts. This burst is shown on a more expanded time scale.

For a detailed explanation of Solar Bursts, please click on the link below

Solar Bursts

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