On 2006 December 13 during the solar minimum, the superactive region NOAA 10930 at the S05W33 disk location produced an X3.4/4B flare at 02:40UT. Fine structures were observed in the radio spectra, which included spikes, reverse slope-type III …
On 2006 December 13 during the solar minimum, the superactive region NOAA 10930 at the S05W33 disk location produced an X3.4/4B flare at 02:40UT. Fine structures were observed in the radio spectra, which included spikes, reverse slope-type III …