Abstract
Recent very high energy (VHE) γ‐ray observations have demonstrated that the radio galaxy M87 is a rapidly variable TeV emitting source. While a number of models for the origin of the observed TeV emission has been put forward, we show that at the current stage near‐black‐hole scenarios look most promising. We discuss one realization where electrons are centrifugally acceleration along rotating magnetic field lines in the vicinity of the central black hole, and Compton up‐scatter the ambient disk photons, resulting in TeV characteristics close to the observed one. This suggests that in nearby, low‐luminous (non‐aligned) Active Galactic Nuclei (AGNs), VHE processes close to the supermassive black hole may become observable and allow a fundamental diagnosis of its environment.
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