Return of the big AR
Taken by Giorgio Rizzarelli on July 9, 2025 @
Trieste, Italy
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
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Date Taken: Unavailable
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Details:
The big unstable Active Region which produced two flares of X-class (=intense) in June (AR4114-15) is now back on the Earth-directed Sun face, risen on East (left) border. So reprises the relative maximum of activity of the North hemisphere in 2025. The region, now renamed AR4136, in the last two days already produced M (medium) class flares and CMEs. In next days it is likely to produce other M flares (if not X) and CMEs which, together with the return on the face of a big coronal hole, may trigger intense auroral events visible at mid latitude.
In these short timelapses the region is catched during a C (common class) flare, happening in sympathy with AR4135 in South hemisphere. Such global activity is typical of the center of the 11-year solar cycle and often involves also big filaments. Indeed the whole Sun timelapse also shows at least an unsettled filament (a situation which goes on since mid June). Filaments explosions, which in latest days happened almost everyday, if Earth-directed may trigger too auroral events.
Lunt60 H-alpha solar scope, Neptune-M camera. Bad seeing due to unstable weather.
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