IRIS Movie of the Day
At least once a week a movie of the Sun taken by NASA's Interface Region Imaging Spectrograph (IRIS) is posted by one of the scientists operating the instrument.
Simultaneous brightenings in a weak flare
Credit: IRIS, LMSAL/NASA, Chunming Zhu
A small flare (up to B class) was observed by IRIS on 2020 December 30 in active region AR 12795. During this weak flare, several (around 5) regions brighten almost at the same time. Whether and how these flaring regions are related during such flares can be an interesting question. IRIS has its spectrograph slit crossing the middle regions and thus provides the information about the plasma flows there during this flare.