TeV signatures of compact UHECR accelerators

Abstract

We study numerically particle acceleration by the electric field induced near the horizon of a rotating supermassive (M \sim 10^9-10^{10} M_{\odot}) black hole embedded in the magnetic field B. We find that acceleration of protons to energy E > 10^{20} eV is possible only at extreme values of M and B. We also find that the acceleration is very inefficient and is accompanied by a broad band MeV-TeV radiation whose total power exceeds at least by a factor of 1000 the total power emitted in ultra-high energy cosmic rays (UHECR). This implies that if O(10) nearby quasar remnants were sources of proton events with energy E > 10^{20} eV, then each quasar remnant would overshine e.g. the Crab nebula by more than two orders of magnitude in the TeV energy band. Recent TeV observations exclude this possibility. A model in which O(100) sources are situated at 100-1000 Mpc is not ruled out and can be experimentally tested by present TeV gamma-ray telescopes. Such a model can explain the observed UHECR flux at moderate energies E \sim (4-5) 10^{19} eV.

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References in corpus (5)

• Energy determination in the Akeno Giant Air Shower Array experiment
• Constraints on the Extremely High-Energy Cosmic Ray Accelerators from Classical Electrodynamics
• Evidence for a connection between the gamma-ray and the highest energy cosmic-ray emissions by BL Lacertae objects
• A Constraint on Electromagnetic Acceleration of Highest Energy Cosmic Rays
• Nearby quasar remnants and ultra-high energy cosmic rays

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• GZK Photons Above 10 EeV
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• Composition of UHECR and the Pierre Auger Observatory Spectrum
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• VHE gamma-ray Emission from Passive Supermassive Black Holes: Constraints for NGC 1399