The Evolution of Cluster Substructure

Details The Evolution of Cluster Substructure The Evolution of Cluster Substructure

2003-04-25

arxiv.org/abs/astro-ph/0304463v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, in Carnegie Observatories Astrophysics Series, Vol. 3: Clusters of Galaxies: Probes of Cosmological Struct

Scientific paper

Using Chandra archival data, we have begun a study to quantify the evolution of cluster morphology with redshift. To quantify cluster morphology, we use the power ratio method developed by Buote and Tsai (1995). Power ratios are constructed from moments of the two-dimensional gravitational potential and are, therefore, related to a cluster's dynamical state. Our sample will include around 50 clusters from the Chandra archive with redshifts between 0.11 and 1.1. These clusters were selected from two fairly complete flux-limited X-ray surveys (the ROSAT Bright Cluster Sample and the Einstein Medium Sensitivity Survey), and additional high-redshift clusters were selected from recent ROSAT flux-limited surveys. Here we present preliminary results from the first 15 clusters in this sample. Of these, eight have redshifts below 0.5, and seven have redshifts above 0.5.

Affiliated with

Also associated with

No associations

Rating

The Evolution of Cluster Substructure 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 The Evolution of Cluster Substructure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Evolution of Cluster Substructure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-698717