Yutaka Fujita 2005 ApJ 631 L17 doi:10.1086/496972
A Simple Measurement of Turbulence in Cores of Galaxy Clusters
FREEYutaka Fujita1
Show affiliationsUsing a simple model, we study the effects of turbulence on the motion of bubbles produced by AGN jet activities in the core of a galaxy cluster. We focus on turbulence on scales larger than the size of the bubbles. We show that for a bubble pair with an age of ~108 yr, the projected angle between the two vectors from the cluster center to the two bubbles should be 
90° and the ratio of their projected distances from the cluster center should be 
2.5, if the velocity and scale of the turbulence are ~250 km s-1 and ~20 kpc, respectively. The positions of the bubbles observed in the Perseus cluster suggest that the turbulent velocity is 100 km s-1 for the cluster.
- Subject headings
cooling flows; galaxies: active; galaxies: clusters: general; turbulence
- Dates
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Issue 1 (2005 September 20)
Received 2005 July 4, accepted for publication 2005 August 8
Published 2005 September 7
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A Simple Measurement of Turbulence in Cores of Galaxy Clusters
Yutaka Fujita 2005 ApJ 631 L17
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