Solar Active Region NOAA AR 2109 (IMAGE)

NASA/Goddard Space Flight Center

Solar Active Region NOAA AR 2109

Caption

Two images of a solar active region (NOAA AR 2109) taken by SDO/AIA show extreme-ultraviolet light produced by million-degree-hot coronal gas (top images) on the day before the region flared (left) and the day before it stayed quiet and did not flare (right). The changes in brightness (bottom images) at these two times show different patterns, with patches of intense variation (black & white areas) before the flare (bottom left) and mostly gray (indicating low variability) before the quiet period (bottom right).

Credit

NASA/SDO/AIA/Dissauer et al. 2022

Usage Restrictions

No restrictions.

License

Public Domain

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