Proceedings of the Conference on High Energy Phenomena in Relativistic Outflows III (HEPRO III); Barcelona, Spain, 27 June-1 July 2011; Editors: J.M. Paredes, M. Ribó, F.A. Aharonian and G.E. RomeroOpen Access

HARD GAMMA-RAY SOURCE SPECTRA IN TeV BLAZARS

EVA LEFA

Max-Planck-Institut für Kernphysik, P.O. Box 103980, 69029 Heidelberg, Germany

Landessternwarte, Königstuhl 12, 69117 Heidelberg, Germany

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FRANK M. RIEGER

Max-Planck-Institut für Kernphysik, P.O. Box 103980, 69029 Heidelberg, Germany

European Associated Laboratory for Gamma-Ray Astronomy, jointly supported by CNRS and MPG, Germany

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FELIX A. AHARONIAN

Max-Planck-Institut für Kernphysik, P.O. Box 103980, 69029 Heidelberg, Germany

Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland

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https://doi.org/10.1142/S2010194512004382Cited by:0 (Source: Crossref)

Abstract

The problem of the hard (intrinsic) γ-ray source spectra in TeV blazars is examined. We show that relativistic Maxwell-like particle distributions provide a suitable interpretation for the inferred hard, very high energy (VHE) photon spectra. We discuss the potential of these distributions to produce broader and softer spectra if multiple zones contribute to the observed emission. We show that the dominance of one component could lead to a VHE flaring state with hard spectral features, like the one observed for Mkn 501 in July 2009.

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HARD GAMMA-RAY SOURCE SPECTRA IN TeV BLAZARS

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