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  • LARGE-SCALE MOTIONS IN THE ...
    Simionescu, A; Werner, N; Urban, O; Allen, S W; Fabian, A C; Sanders, J S; Mantz, A; Nulsen, P E J; Takei, Y

    The Astrophysical journal, 10/2012, Letnik: 757, Številka: 2
    Journal Article

    By combining large-scale mosaics of ROSAT PSPC, XMM-Newton, and Suzaku X-ray observations, we present evidence for large-scale motions in the intracluster medium of the nearby, X-ray bright Perseus Cluster. These motions are suggested by several alternating and interleaved X-ray bright, low-temperature, low-entropy arcs located along the east-west axis, at radii ranging from ~ 10 kpc to over a Mpc. Thermodynamic features qualitatively similar to these have previously been observed in the centers of cool-core clusters, and were successfully modeled as a consequence of the gas sloshing/swirling motions induced by minor mergers. Our observations indicate that such sloshing/swirling can extend out to larger radii than previously thought, on scales approaching the virial radius.