Gas Clumping in the Outskirts of Lambda-CDM Clusters

Details Gas Clumping in the Outskirts of Lambda-CDM Clusters Gas Clumping in the Outskirts of Lambda-CDM Clusters

2011-03-01

arxiv.org/abs/1103.0280v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted for publication in ApJ Letters (5 pages, 5 figures)

Scientific paper

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 Lambda-CDM 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.

Affiliated with

Also associated with

No associations

Rating

Gas Clumping in the Outskirts of Lambda-CDM Clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gas Clumping in the Outskirts of Lambda-CDM Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas Clumping in the Outskirts of Lambda-CDM Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-472176