Spectral and Spatial Distribution of Accelerated Protons on 11 May 2024

The ground-level enhancement (GLE) of the cosmic ray intensity is the result of a short-term increase in the intensity of secondary cosmic ray particles recorded by ground-based detectors. The study of GLE provides us with information about the acceleration mechanisms and particle propagation in the heliosphere. We investigated GLE74 (11 May 2024). It was the second GLE in solar cycle 25 caused by a solar flare of class 5.8 and a fast coronal mass ejection. The event was observed against the background of the Forbush effect recovery. We analyzed cosmic ray data from the worldwide network of neutron monitors processed by the global spectrographic survey method. We also used the GOES-16 data. Within the model of cosmic ray modulation by regular electromagnetic fields of the heliosphere, we determined the differential rigidity spectra of accelerated protons and their spatial distribution. The limiting rigidity of accelerated particles was estimated to be ~5–6 GV. We briefly analyzed the cosmic ray spectra and anisotropy data obtained during the GLE74 event in comparison with similar events studied previously.