Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT

Details Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT

2010-12-06

arxiv.org/abs/1012.1151v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Proceedings of "The Wide Field X-ray Telescope Workshop", held in Bologna, Italy, Nov. 25-26 2009. To appear in Memorie della

Scientific paper

In this contribution we trace the evolution of cool-core clusters out to z~1.3 using high-resolution Chandra data of three representative cluster samples spanning different redshift ranges. Our analysis is based on the measurement of the surface brightness (SB) concentration, c_SB, which strongly anti-correlates with the central cooling time and allows us to characterize the cool-core strength in low S/N data. We confirm a negative evolution in the fraction of cool-core clusters with redshift, in particular for very strong cool-cores. Still, we find evidence for a large population of well formed cool-cores at z ~ 1. This analysis is potentially very effective in constraining the nature and the evolution of the cool-cores, once large samples of high-z clusters will be available. In this respect, we explore the potential of the proposed mission Wide Field X-ray Telescope (WFXT) to address this science case. We conclude that WFXT provides the best trade-off of angular resolution, sensitivity and covered solid angle in order to discover and fully characterize the cool-core cluster population up to z=1.5.

Affiliated with

Also associated with

No associations

Rating

Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT 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 Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-167706