Figure 4
From: Major solar eruptions and high-energy particle events during solar cycle 24
CMEs and the proton intensities during the 6 January 2014 and 7 January 2014 events. White-light images of the GLE CME on 6 January 2014 (a) and an equally energetic CME on 7 January 2014 that did not produce a GLE (b). The lines superposed on the coronagraph images delineate the region (±13° from the ecliptic) into which the CME nose needs to be for a GLE event to be detected at Earth. Proton intensity plots for the two events (c) show that CME (a) had energetic particles in the >700-MeV channel (pointed by an arrow), while CME (b) had particles only up to the 165- to 500-MeV channel.