Fig. 23

Peak intensities of He, O, and Fe as a function of flare-spacecraft footpoint separations (Δ Longitude) of two-spacecraft events (Cohen et al. 2017). Negative values of Δ Longitude correspond to footpoints west of the flare location, and positive values correspond to locations east of the flare. The different panels show different energies with (a) 0.3, (b) 1, and (c) 10 MeV/n. Panel (d) shows protons at all three energies. Individual events are connected by lines, the thick curves show periodic Gaussian fits