ИСТИНА

Although supernova remnants (SNRs) are thought to be the main sources of Galactic cosmic rays,there are only one indirect confirmation of this fact: X-ray synchrotron radiation observed from the filamentsand thin ring around the young shells, that was interpreted as the result of synchrotron emission from shockaccelerated electrons accelerated up to energies of 10−100 TeV in the relatively strong magnetic fields 100-600G, those are produced by the strong cosmic ray streaming instability. On the other hand the description of allparticle spectrum is successfully can be done in the frame of the analytical calculation (without taking intoaccount the stochastic nature of sources) where different types of SNRs accelerate charged particles up todifferent maximal energies. In this model the knee is provided by SNR of Ia type (about 20% among all SNR)and the “transition region” 1017-5Ч1018 is provided by the special class of SNRs IIb (about 2-5% among allSNR) having very large shock velocity and high output energy. At so high energy the time of diffusivepropagation of cosmic rays already is comparable with the speed of light and we can try to find out theseunic sources in the high energy gamma- astronomy catalogues