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Two Successive Type II Radio Bursts Associated with B-class Flares and Slow CMEs

Chen, Huadong; Ma, Suli

3 From 2018 Oct 12 to 13, three successive solar eruptions (E1-E3) with B-class flares and poor 4 white light coronal mass ejections (CMEs) occurred from the same active region NOAA AR 12724. 5 Interestingly, the first two eruptions are associated with Type II radio bursts but the third is not. 6 Using the soft X-ray flux data, radio dynamic spect…