The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation

@article{Ajello2015TheOO,
  title={The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation},
  author={M. Ajello and D. Gasparrini and M. Sanchez-conde and G. Zaharijas and M. Gustafsson and J. Cohen-Tanugi and C. Dermer and Y. Inoue and D. Hartmann and M. Ackermann and K. Bechtol and A. Franckowiak and A. Reimer and R. Romani and A. Strong},
  journal={arXiv: High Energy Astrophysical Phenomena},
  year={2015}
}
The origin of the extragalactic $\gamma$-ray background (EGB) has been debated for some time. { The EGB comprises the $\gamma$-ray emission from resolved and unresolved extragalactic sources, such as blazars, star-forming galaxies and radio galaxies, as well as radiation from truly diffuse processes.} This letter focuses on the blazar source class, the most numerous detected population, and presents an updated luminosity function and spectral energy distribution model consistent with the blazar… Expand

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