Cygnus X-3 and Supernova Remnants

Details Cygnus X-3 and Supernova Remnants Cygnus X-3 and Supernova Remnants

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....6.2509s&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

Scientific paper

Since 1994, the telescope SHALON at SHALON-ALATOO mountain observatory (altitude 3338m), has detected Very High Energy gamma-ray from Galactic objects Crab Nebula, Cygnus X-3, Geminga and Tycho Brage. Time analysis of the Cherenkov light outbursts shows that the contribution of protons of cosmic rays in observed gamma-quanta flux with energies higher than 0.8TeV from the point sources of gamma-quanta doesn't exceed 10% 15%. The fluxes with energies above 0.8TeV observed for Crab Nebula are (1.10±0.13)•10-12 cm-2 s-1 , for Cygnus X-3 are (4.20±0.70)•10-13 cm-2 s-1 , for Geminga are (4.8±1.7)•10-13 cm-2 s-1 and for Tycho Brage are (1.89±0.90)•10-13 cm-2 s-1 . The observable energy distribution of gamma quanta in an energy interval of 1012 -5•1013 from local sources in our Galaxy does not contradict to the spectrum for Crab Nebula dF/dEγ~Eγ -2.08±0.12 , for Cygnus X-3 dF/dEγ~Eγ -2.20±0.14 . The observed spectra of the gamma-quanta including the 10%15% contribution of the proton showers is for Crab Nebula dF/dE~ E-2.35±0.12 , for Cygnus X-3 dF/dE~E-2.51±0.22 . It also differs from energy spectrum of cosmic rays dF/dE~ E-2.70 .

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