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Paper: Discovery of VHE γ-rays from Centaurus A
Volume: 427, Accretion and Ejection in AGN: a Global View
Page: 302
Authors: Raue, M.; Lenain, J.-P.; Aharonian, F. A.; Becherini, Y.; Boisson, C.; Clapson, A.-C.; Costamante, L.; Gérard, L.; Medina, C.; de Naurois, M.; Punch, M.; Rieger, F.; So, H.; Stawarz, L.; Zech, A. for the H.E.S.S. Collaboration
Abstract: Centaurus A is the closest active radio galaxy. Its proximity enables unique studies of the processes in relativistic jets and near supermassive black holes. Centaurus A has been intensively studied in many wavelength bands and has also been discussed as a possible site for UHECR acceleration. Here, we report the discovery of weak very-high energy γ-ray emission from Centaurus A with the H.E.S.S. Cherenkov telescope array. The discovery of Centaurus A, together with the detection of M 87, establishes radio galaxies - i.e. AGNs with only weak relativistic beaming - as sources of VHE gamma-rays. The implications of these results on the emission site and on the different models available will be discussed.
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