Fast-evolving big prominence
Taken by Giorgio Rizzarelli on May 27, 2023 @
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:
As documented also by other European photographers in this gallery, yesterday May 27th around 12UTC the Sun unleashed a big and fast-evolving prominence which lasted only about one hour: While absent at 1130 (times are UTC and rounded to 15mins), at 1145 it was already big, full at 12-1230, and at 1245 it had already almost vanished.
In a movie of the prominence in planetary camera (not included here) the evolution is notable almost in real time, with a change every few seconds. From the movie I estimated the plasma velocity to be comparable to (slow) solar wind. Fast prominences like this are uncommon: As seen by comparing the two pictures, the other prominences and the sunspots didn't change significatively during this hour.
This prominence didn't originate from a sunspot. It appeared on the East border, but there isn't a sunspot behind that border about to turn toward Earth: According the latest news on the homepage, there is a big sunspot on the farside, but about 10 days away from turning toward Earth, so large that it's affecting the whole Sun vibrations and activity. I suppose this may be the indirect cause of this spectacular prominence.
Single shots LuntHA60PT + EOS600D
Photographer's website:
No URL provided.
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