Frequency distributions of solar gamma ray events related and not related with SPEs in 1980-1995

The advent of new and better instruments in space has resulted in a conside rable increase in the number of solar gamma-ray events (GRE) detected. In t his paper, we analyze available SMM/GRS and GRANAT/PHEBUS data on the hard X-ray and gamma-ray events, and their associations with solar proton events (SPE) at the Earth's orbit, for the observation period of 1980-1995. About 58% of the GREs under study were found to be SPE-related ones. Size (frequ ency) distributions have been obtained, for the first time, for the events with different types of emissions (bremsstrahlung, narrow GR lines, positro n annihilation line, neutron capture line, SPEs, etc.). We discuss the poss ible relationships between size distributions implied by the parameter corr elation. The distribution for GR events turns out to be generally harder th an that for X-ray bursts. The GREs involving energetic particles in space a re shown to have a harder frequency distribution in comparison with that fo r GREs without detectable SPEs. There is also a tendency for the GREs with highest fluences to be related with SPEs. Finally, no correlation seems to exist between the GRL fluence and maximum flux of > 10 MeV protons near the Earth.