The MUSIC of Galaxy Clusters II: X-ray global properties and scaling relations

摘要: We present the X-ray properties and scaling relations of a large sample clusters extracted from Marenostrum MUltidark SImulations galaxy Clusters (MUSIC) dataset. focus on sub-sample 179 at redshift z � 0.11, with 3.2 × 10 14 h −1 M⊙ < Mvir 2 15 M⊙, complete in mass. employed photon simulator PHOX to obtain synthetic Chandra observations derive observable-like global intracluster medium (ICM), as temperature (TX) luminosity (LX). TX is found slightly under-estimate true mass-weighted temperature, although tracing fairly well cluster total also study effects intrinsic properties: (M500 gas Mg,500 mass; integrated Compton parameter (YSZ) Sunyaev-Zel’dovich (SZ) thermal effect; YX = TX. confirm that very good mass proxy, scatter M500 YSZ lower than 5%. The among X-ray, SZ indicates simulated MUSIC reasonably resemble self-similar prediction, especially for correlations involving observational approach allows more direct comparison real clusters, which we find deviations mainly due physical description ICM, affecting and, particularly, LX.