OBSERVED AND EXPECTED 1–30 TEV GAMMA-RAY EMISSION FROM GEMINGA AND TYCHO'S SUPERNOVA REMNANTS

The gamma-quantum emitting objects in our Galaxy are the supernova remnants and binaries. Preliminary analysis of the data for γ-ray sources Tycho Brage and Geminga obtained with the SHALON γ-ray telescope is briefly discussed. The energy spectra of γ's from the Geminga and Tycho's sources, F (E > 0.8 TeV) ∝ Ek are found to be harder than the spectrum from Crab Nebula. The expected π0-decay γ-ray flux extends up to ~ 30 TeV, whereas the inverse Compton γ-ray flux has a cutoff above a few TeV. Hence, the detection of γ rays at energies ~ 10 – 30 TeV provides a hint of their hadronic origin.