Testing Numerical Models of Cool Core Galaxy Cluster Formation with X-Ray Observations

Details Testing Numerical Models of Cool Core Galaxy Cluster Formation with X-Ray Observations Testing Numerical Models of Cool Core Galaxy Cluster Formation with X-Ray Observations

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1201..282h&link_type=abstract

THE MONSTER'S FIERY BREATH: FEEDBACK IN GALAXIES, GROUPS, AND CLUSTERS. AIP Conference Proceedings, Volume 1201, pp. 282-285 (2

Computer Science

Clusters Of Galaxies, Brightness, X-Ray Emission Spectra, Galaxy Clusters, Magnitudes And Colors, Luminosities, X-Ray

Scientific paper

Using archival Chandra and ROSAT data along with numerical simulations, we compare the properties of cool core and non-cool core galaxy clusters, paying particular attention to the region beyond the cluster cores. With the use of single and double β-models, we demonstrate a statistically significant difference in the slopes of observed cluster surface brightness profiles while the cluster cores remain indistinguishable between the two cluster types. Additionally, through the use of hardness ratio profiles, we find evidence suggesting cool core clusters are cooler beyond their cores than non-cool core clusters of comparable mass and temperature, both in observed and simulated clusters. The similarities between real and simulated clusters supports a model presented in earlier work by the authors describing differing merger histories between cool core and non-cool core clusters. Discrepancies between real and simulated clusters will inform upcoming numerical models and simulations as to new ways to incorporate feedback in these systems.

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