Was the GLE on May 17, 2012 linked with the M5.1-class flare the first in the 24th solar cycle?

C. R. A. Augusto, V. Kopenkin, C. E. Navia +8

On May 17, 2012 an M5.1-class flare exploded from the sun. An O-type coronal mass ejection (CME) was also associated with this flare. There was an instant increase in proton flux w…