Self-similar scaling and evolution in the galaxy cluster X-ray Luminosity-Temperature relation

Understand

We investigate the form and evolution of the X-ray luminosity-temperature (LT) relation of a sample of 114 galaxy clusters observed with Chandra at 0.1<z<1.3.

• The clusters were divided into subsamples based on their X-ray morphology or whether they host strong cool cores.
• We find that when the core regions are excluded, the most relaxed clusters (or those with the strongest cool cores) follow an LT relation with a slope that agrees well with simple self-similar expectations.
• This is supported by an analysis of the gas density profiles of the systems, which shows self-similar behaviour of the gas profiles of the relaxed clusters outside the core regions.