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Search for γ Radiation above 20 TeV from Supernova Remnants in our Galaxy

It is generally assumed that supernova remnants are powerful cosmic accelerators and that they are most likely the origin of VHE and UHE cosmic radiation. The HEGRA collaboration reports on a systematic search for gamma radiation from all known supernova remnants smaller than 40 0 in the eld of view of the Cerenkov array AIROBICC.