SIMBAD references

2006MNRAS.368.1369G - Mon. Not. R. Astron. Soc., 368, 1369-1376 (2006/May-3)

Tracing gas motions in the Centaurus cluster.


Abstract (from CDS):

We apply the stochastic model of iron transport developed by Rebusco et al. to the Centaurus cluster. Using this model, we find that an effective diffusion coefficient D in the range 2x1028-4x1028 cm2/s can approximately reproduce the observed abundance distribution. Reproducing the flat central profile and sharp drop around 30-70kpc, however, requires a diffusion coefficient that drops rapidly with radius so that D > 4x1028 cm2/s only inside about 25kpc. Assuming that all transport is due to fully developed turbulence, which is also responsible for offsetting cooling in the cluster core, we calculate the length- and velocity-scales of energy injection. These length-scales are found to be up to a factor of ∼10 larger than expected if the turbulence is due to the inflation and rising of a bubble. We also calculate the turbulent thermal conductivity and find it is unlikely to be significant in preventing cooling.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: Centaurus - cooling flows

Status at CDS:  

Simbad objects: 5

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