Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-11-02
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
4 pages, 5 figures, 2011 Fermi Symposium proceedings - eConf C110509
Scientific paper
The synergy between the Fermi-LAT and ground-based Cherenkov telescope arrays gives us the opportunity for the first time to characterize the high energy emission (100 MeV - 10 TeV) from more than 30 blazars. In this study we performed a Fermi-LAT spectral analysis for all TeV-detected blazars and combined it with archival TeV spectra. Our results for low synchrotron-peaked BL Lacs (LBL) show hints of absorption features in the GeV band that could be interpreted as internal opacity at the source. We note that simple or broken power laws cannot describe all the observed GeV-TeV spectra and more complex spectral shapes seem required.
Boettcher Markus
Coppi Paolo
Errando Manel
Mukherjee Rajesh
Roustazadeh Parisa
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