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Cool Cores in Clusters of Galaxies in the Dark Energy Survey
- Publication Year :
- 2023
-
Abstract
- We search for the presence of cool cores in optically-selected galaxy clusters from the Dark Energy Survey (DES) and investigate their prevalence as a function of redshift and cluster richness. Clusters were selected from the redMaPPer analysis of three years of DES observations that have archival Chandra X-ray observations, giving a sample of 99 clusters with a redshift range of $0.11 < z < 0.87$ and a richness range of $25 < \lambda < 207$. Using the X-ray data, the core temperature was compared to the outer temperature to identify clusters where the core temperature is a factor of 0.7 or less than the outer temperature. We found a cool core fraction of approximately 20% with no significant trend in the cool core fraction with either redshift or richness.<br />Comment: shortened version accepted to RNAAS
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2305.02365
- Document Type :
- Working Paper