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.
Filament growth in a filament channel
Credit: IRIS, LMSAL/NASA, Chunming Zhu
Filament/prominence corresponds to relatively cool materials suspended above the Sun. They are among the prior targets for IRIS observations. Embracing the new year of 2020, IRIS recently captured a growing filament evidenced by the accumulating dark features in Mg II line during raster scans. The movie here is composed of three series of rasters at around 1/2 10:30, 1/3 06:00, and 1/3 11:00, under the same observation setup (observation ID) and tracking the same part of a filament channel on the solar disk. Such tracking of filaments helps reveal their formation and evolution processes.