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    • How gravitational lensing helps y-ray photons avoid y-y absorption 

      Barnacka, Anna; Böttcher, Markus; Sushch, Iurii (IOP Publishing, 2014)
      We investigate potential γ – γ absorption of γ-ray emission from blazars arising from inhomogeneities along the line of sight, beyond the diffuse Extragalactic Background Light (EBL). As plausible sources of excess γ – γ ...