Cosmic ray spectra and galactic diffuse gamma-ray emission

Calculations of the distribution of relativistic protons in the Galaxy are performed within the framework of the diffusion model and a comparison is made with gamma-ray background data obtained with the SAS II and COS-B satellites. Calculations of the positron component of cosmic rays revealed that, in the energy range of less than 10 GeV, positrons are apparently produced in the galactic disk due to the interaction of the diffusing proton-nuclear component with the interstellar hydrogen. It is found that about 30 percent of the total emission of the Galaxy in the energy range of 100 MeV-5 GeV is radiated by the halo. The rest of the emission in this range is radiated by the Galactic disk.