Вспышка X1.8, 20 декабря 2014 года

Big sunspot 2242 produced a strong X1.8 solar flare peaking at 00:27 UTC (Dec 20). The event was associated with a long duration radio burst (TenFlare) lasting nearly an hour and measuring 2300 solar flux units (SFU). A type II radio emission with an estimated velocity of 900 km/s was also detected, meaning that a coronal mass ejection is likely. Based on available flare imagery, it would appear that most of the ejected material will be directed south of the ecliptic. Coronagraph imagery is still required t