VERY HIGH ENERGY GAMMA-RAYS PROM GALACTIC SOURCES GEMINGA AND TYCHO BRAHE'S SUPERNOVA REMNANTS (1-30 TeV) AND BINARY SYSTEM CYGNUS X-3 (1-65 TeV)

摘要

The galactic source Cygnus X-3 was regularly observed by the SHALON telescope starting from 1995 with a mean value of gamma-ray flux F(-ED>0.8TeV) = (G.SiO.ej-lO-^ cm-^s"1. The flux in 2003 was equal to (1.79±0.33)-10~12 cm"2^"1. Earlier, in 1997, an increase in the flux up to (1.2±0.5)-10~ls cm"2^-1 was also observed. The Ty-cho Brahe's supernova remnant has long been considered as a can-didate for the source of cosmic ray hadrons in the Northern Hemi-sphere, where the flux of gamma-rays F7~￡~1, expected from tt° decays, stretching to ~ 30 TeV, while the gamma-ray flux generated by the process of inverse Compton scattering had a cutoff above sev-eral TeV. The detection of gamma-rays at energies 10—30 TeV by the SHALON telescope gave evidence of their hadronic origin.