Search for Gamma-ray Lines towards Galaxy Clusters with the Fermi-LAT

  title={Search for Gamma-ray Lines towards Galaxy Clusters with the Fermi-LAT},
  author={Benedict R. O'g. Anderson and Stephan Zimmer and J. Conrad and Michael Gustafsson and Miguel A. S'anchez-Conde and Regina Caputo},
  journal={arXiv: High Energy Astrophysical Phenomena},
We report on a search for monochromatic $\gamma$-ray features in the spectra of galaxy clusters observed by the \emph{Fermi} Large Area Telescope. Galaxy clusters are the largest structures in the Universe that are bound by dark matter (DM), making them an important testing ground for possible self-interactions or decays of the DM particles. Monochromatic $\gamma$-ray lines provide a unique signature due to the absence of astrophysical backgrounds and are as such considered a smoking-gun… Expand

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