The case for electron re-acceleration at galaxy cluster shocks

  title={The case for electron re-acceleration at galaxy cluster shocks},
  author={R. J. van Weeren and Felipe Andrade-Santos and William A. Dawson and Nathan R. Golovich and Dharam Vir Lal and Hyesung Kang and Dongsu Ryu and Marcus Bruggen and G. A. Ogrean and William R. Forman and Christine Jones and Vinicius M. Placco and Rafael M. Santucci and David Wittman and M. James Jee and Ralph P. Kraft and David Sobral and Andra Stroe and Kevin Fogarty},
  journal={Nature Astronomy},
On the largest scales, the Universe consists of voids and filaments making up the cosmic web. Galaxy clusters are located at the knots in this web, at the intersection of filaments. Clusters grow through accretion from these large-scale filaments and by mergers with other clusters and groups. In a growing number of galaxy clusters, elongated Mpc-size radio sources have been found [1, 2]. Also known as radio relics, these regions of diffuse radio emission are thought to trace relativistic… 

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