On the detectability of turbulence and bulk flows in X-ray clusters

  title={On the detectability of turbulence and bulk flows in X-ray clusters},
  author={Rashid Alievich Sunyaev and Michael L. Norman and Greg L. Bryan},
  journal={Astronomy Letters},
Coolingflows, cluster mergers, and the motions of galaxies through cluster gas with supersonic and sonic velocities must lead to large scale motions of the intracluster medium (ICM). A high-resolution numerical simulation of X-ray cluster formation by Norman and Bryan (1999) predicts cluster-wide turbulence with νturb ≈300–600 km s∓1 and eddy scales louter ≈100–500 kpc, the larger numbers being characteristic of turbulence near the virial radius, while the smaller numbers pertain to the core… 

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