Cosmic source of "glueballs" - Cygnus X-3.

The nature of primary neutral radiation at energies of 10 to the 15th to 10 to the 16th eV from Cygnus X-3 is discussed. It is argued that these particles cannot be gamma quanta, neutrinos, or photons. This leads to the hypothesis that they are bound gluino-gluon states (glubolino) with a mass of the order of 2-4 GeV. The properties of the glubolino are discussed, and it is shown that the present hypothesis is in keeping with both cosmological and accelerator data.