Evolution of Anemone AR NOAA 10798 and the 1 Related Geo - Effective Flares and CMEs
نویسندگان
چکیده
We present a detailed examination of the features of the Ac-3 tive Region (AR) NOAA 10798. This AR generated coronal mass ejections 4 (CMEs) that caused a large geomagnetic storm on 24 August 2005 with the 5 minimum Dst index of −216 nT. We examined the evolution of the AR and 6 the features on/near the solar surface and in the interplanetary space. The 7 AR emerged in the middle of a small coronal hole, and formed a sea anemone 8 like configuration. Hα filaments were formed in the AR, which have south-9 ward axial field. Three M-class flares were generated, and the first two that 10
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