Witnessing the growth of the nearest galaxy cluster

  title={Witnessing the growth of the nearest galaxy cluster},
  author={Aurora Simionescu and Norbert Werner and Adam B. Mantz and Steven W. Allen and Ondrej Urban},
We present results from Suzaku Key Project observations of the Virgo Cluster, the nearest galaxy cluster to us, mapping its X-ray properties along four long `arms' extending beyond the virial radius. The entropy profiles along all four azimuths increase with radius, then level out beyond $0.5r_{200}$, while the average pressure at large radii exceeds Planck Sunyaev-Zel'dovich measurements. These results can be explained by enhanced gas density fluctuations (clumping) in the cluster's outskirts… 

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