On the Origin of VHE Gamma-Ray Emission in M87

Rieger, Frank; Aharonian, Felix

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On the Origin of VHE Gamma-Ray Emission in M87

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Rieger, Frank
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Aharonian, Felix
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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引用

Rieger, F., & Aharonian, F. (2009). On the Origin of VHE Gamma-Ray Emission in M87. In F. A., Aharonian, W., Hofmann, & F. M., Rieger (Eds.), High energy gamma-ray astronomy: 4th International Meeting on High Energy Gamma-Ray Astronomy, Heidelberg, Germany, 7 - 11 July 2008 (pp. 640-643). Melville, N.Y.: American Institute of Physics.

引用: https://hdl.handle.net/11858/00-001M-0000-0011-7700-7

要旨

Recent very high energy (VHE) gamma-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.