A GeV-TeV Measurement of the Extragalactic Background Light

11 Mar 2019 Desai Abhishek Helgason Kári Ajello Marco Paliya Vaidehi Domínguez Alberto Finke Justin Hartmann Dieter H.

The Extragalactic Background Light (EBL) can be probed via the absorption imprint it leaves in the spectra of gamma-ray sources ($\gamma\gamma \rightarrow e^-e^+$). We recently developed a dedicated technique to reconstruct the EBL, and its evolution with redshift, from $\gamma$ ray optical depth data using a large sample of blazars detected by the $Fermi$ Large Area Telescope... (read more)

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  • HIGH ENERGY ASTROPHYSICAL PHENOMENA