SIMBAD references

2005ApJ...633..781K - Astrophys. J., 633, 781-790 (2005/November-2)

XMM-Newton observations of evolution of cluster X-ray scaling relations at z=0.4-0.7.


Abstract (from CDS):

We present a spatially resolved analysis of the temperature and gas density profiles of galaxy clusters at z=0.4-0.7 observed with XMM-Newton. These data are used to derive the total cluster mass within the radius r500without assuming isothermality and also to measure the average temperature and total X-ray luminosity, excluding the cooling cores. We derive the high-redshift M-T and L-T relations and compare them with the local measurements. The high-redshift L-T relation has low scatter and evolves as L∝(1+z)1.8±0.3 for a fixed T, in agreement with several previous Chandra and XMM-Newton studies (Vikhlinin et al., Lumb et al., and Maughan et al.). The observed evolution of the M-T relation follows M500∝E(z)–α, where we measure α=0.88±0.23. This is in agreement with predictions of the self-similar theory, α=1.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: General - Surveys - X-Rays: Galaxies

Status at CDS:  

Simbad objects: 10

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