The other is magnetic heating, in which magnetic energy is continuously built up by photospheric motion and released through magnetic reconnection in the form of large solar flares and myriad similar but smaller events. (newworldencyclopedia.org)
FOXSI's measurements — along with additional X-ray data from the JAXA and NASA Hinode solar observatory — allow the team to say with certainty that the hard X-rays came from a specific region on the Sun that did not have any detectable larger solar flares, leaving nanoflares as the only likely instigator. (sciencedaily.com)
According to NASA solar scientist C. Alex Young, the region is unusual because it produced fairly large solar flares but not the huge coronal mass ejections that typically occur at the same time, sometimes damaging satellites. (discovermagazine.com)