SIMBAD references

2005ApJ...631L..17F - Astrophys. J., 631, L17-L20 (2005/September-3)

A simple measurement of turbulence in cores of galaxy clusters.


Abstract (from CDS):

Using 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 and ∼20 kpc, respectively. The positions of the bubbles observed in the Perseus cluster suggest that the turbulent velocity is ≳100 km/s for the cluster.

Abstract Copyright:

Journal keyword(s): Galaxies: Cooling Flows - Galaxies: Active - Galaxies: Clusters: General - Turbulence

Status at CDS:  

Simbad objects: 6

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