Abstract
The new galactic gamma-source (neutron star) 2129+47XR is detected at energy > 0.8 TeV with flux ( 0.19 ± 0.09 ) × 10 −12 cm 2 s −1 and indices of the integral spectra are k γ = − 1.12 ± 0.06 , k O N = − 1.28 ± 0.07 and k O f f = − 1.73 ± 0.07 . The results of ten-year observation of galactic source Cygnus X-3 by SHALON mirror Cherenkov telescope are discussed. The gamma -quantum spectra and images of the sources are presented. The Cygnus X-3 binary, known for more than 20 years as a source with variable intensity have been regularly observed since a 1995. The the increase of gamma-quantum flux was observed in 1997 and 2003 years.
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