Constraints on the multi-TeV particle population in the coma galaxy cluster with HESS observations - Aharonian, Felix A.; Behera, Bagmeet; Hauser, Marcus; Kaufmann, Sarah; Pedaletti, Giovanna; Quirrenbach, Andreas; Schwemmer, Stephanie; Tam, Pak Hin; Wagner, Stefan (Astronomy and astrophysics, 2009)