Browsing Conference Papers by Author "26598973 - Abdalla, Hassan"
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The effects of EBL inhomogeneity on the gamma-gamma absorption of VHE gamma-rays
Abdalla, Hassan; Böttcher, Markus (HEASA, 2016)Very High Energy Gamma Rays (VHE; more than 100 GeV) from Cosmological Gamma Ray Sources such as blazars can be absorbed by the Extragalactic Background light (EBL), which leads to a high-energy cut-off in blazar spectral ... -
Why the universe is unexpectedly transparent to very high energy gamma rays
Abdalla, Hassan; Böttcher, Markus (Sissa Medialab, 2017)Recent observations of distant gamma ray sources indicate that the universe may be more transparent to VHE-gamma-rays than expected. In this paper we study the reduction of the EBL gamma-gamma opacity due to the existence ...