The hard TeV spectrum of 1 ES 0229 + 200 : new clues from Swift

Abstract

The BL Lac object 1ES 0229+200 (z = 0.14) has been detected by HESS during observations taking place in 2005-2006. The TeV spectrum, when corrected for the absorption of gamma-ray photons through the interaction with the extragalactic background light, is extremely hard, even if the most conservative level for the background is considered. The case of 1ES… (More)

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