SIMBAD references

2011ApJ...731L..10N - Astrophys. J., 731, L10 (2011/April-2)

Gas clumping in the outskirts of ΛCDM clusters.


Abstract (from CDS):

Recent Suzaku X-ray observations revealed that the observed entropy profile of the intracluster medium (ICM) deviates significantly from the prediction of hydrodynamical simulations of galaxy clusters. In this work, we show that gas clumping introduces significant biases in X-ray measurements of the ICM profiles in the outskirts of galaxy clusters. Using hydrodynamical simulations of galaxy cluster formation in a concordance ΛCDM model, we demonstrate that gas clumping leads to an overestimate of the observed gas density and causes flattening of the entropy profile. Our results suggest that gas clumping must be taken into account when interpreting X-ray measurements of cluster outskirts.

Abstract Copyright:

Journal keyword(s): cosmology: theory - galaxies: clusters: general - methods: numerical - X-rays: galaxies: clusters

Simbad objects: 5

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2011ApJ...731L..10N and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact