Search for TeV γ-rays from extragalactic point sources with neural network γ/hadron separation

The neutral net (NN) based analysis of the data provided by the 17 Geiger towers of the HEGRA (High Energy Gamma Ray Astronomy) air shower detector array on the Canary Island La Palma is used to search for ≥ 50 TeV γ-emission from the superposition of nearby northern blazars. A comparison of MC and experimental data shows good agreement if the actual detector performance is taken into account. We find weak evidence for enhanced γ-emission from the detection of the blazars.