A METHOD FOR SETTING UPPER LIMITS TO THE EXTRAGALACTIC BACKGROUND LIGHT WITH FERMI-LAT AND TeV OBSERVATIONS OF BLAZARS

@article{Georganopoulos2010AMF,
  title={A METHOD FOR SETTING UPPER LIMITS TO THE EXTRAGALACTIC BACKGROUND LIGHT WITH FERMI-LAT AND TeV OBSERVATIONS OF BLAZARS},
  author={Markos Georganopoulos and Justin D. Finke and Luis C. Reyes},
  journal={The Astrophysical Journal},
  year={2010},
  volume={714}
}
We propose a method for setting upper limits to the extragalactic background light (EBL). Our method uses simultaneous Fermi-LAT and ground-based TeV observations of blazars and is based on the assumption that the intrinsic spectral energy distribution (SED) of TeV blazars lies below the extrapolation of the Fermi-LAT SED from GeV to TeV energies. By extrapolating the Fermi-LAT spectrum, which for TeV blazars is practically unattenuated by photon-photon pair production with EBL photons, a firm… Expand

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