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The XMM cluster outskirts project (X‑ COP )

Pointecouteau, E.; Paltani, S.; Molendi, S. +3 more

Galaxy clusters are thought to grow hierarchically through the continuous merging and accretion of smaller structures across cosmic time. In the local Universe, these phenomena are still active in the outer regions of massive clusters ($R>R_{500}$), where the matter distribution is expected to become clumpy and asymmetric because of the presenc…