Deficit of distant X-ray-emitting galaxy clusters and implications for cluster evolution

Details Deficit of distant X-ray-emitting galaxy clusters and implications for cluster evolution Deficit of distant X-ray-emitting galaxy clusters and implications for cluster evolution

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995natur.377...39c&link_type=abstract

Nature, Volume 377, Issue 6544, pp. 39-41 (1995).

Computer Science

60

Scientific paper

CLUSTERS of galaxies are the largest gravitationally bound systems in the Universe and therefore provide important constraints on the formation and evolution of large-scale structure. Cluster evolution can be inferred from observations of the X-ray emission of the gas in distant clusters, but interpreting these data is not straightforward. In a simplified view, clusters grow from perturbations in the matter distribution, and the intracluster gas is compressed and shock-heated by the gravitational collapse1. If the gas is in hydrostatic equilibrium the resulting X-ray emission is related in a simple way to the evolving gravitational potential. But if processes such as radiative cooling or pre-collapse heating of the gas are also important, the X-ray evolution will be strongly influenced by the thermal history of the gas. Here we present the results of a faint flux-limited sample of X-ray selected clusters observed by Rosat. Very few distant clusters have been identified, and their redshift distribution seems to be inconsistent with simple models based on the evolution of the gravitational potential. Our results thus suggest that radiative cooling or non-gravitational heating of intracluster gas must be important in the evolution of clusters.

Affiliated with

Also associated with

No associations

Rating

Deficit of distant X-ray-emitting galaxy clusters and implications for cluster evolution 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 Deficit of distant X-ray-emitting galaxy clusters and implications for cluster evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deficit of distant X-ray-emitting galaxy clusters and implications for cluster evolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-989900