Constraints on the cluster mass-temperature relation imposed by the diffuse X-ray background

Tse Lin Lee, Chorng Yuan Hwang

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

We show the constraints on the dynamical properties of groups and clusters of galaxies imposed by the diffuse X-ray background (XRB) emission. We first estimate the total integrated diffuse X-ray emission associated with groups and clusters of galaxies using the X-ray luminosity function derived from the Press-Schechter mass function and the mass-temperature (M-T) and X-ray luminosity-temperature relations of the galaxy groups and clusters. We have applied different cosmological models and M-T relations in estimating the integrated emission. For most of the models associated with the M-T relations derived from X-ray mass estimates, we find that the integrated emission significantly exceeds the unresolved diffuse XRB emission. We suggest that using the X-ray surface brightness profiles as a cluster mass estimator may significantly underestimate the real mass of galaxy clusters. Our methods provide strong constraints on the distribution and the dynamical evolution models of the galaxy clusters.

原文???core.languages.en_GB???
頁(從 - 到)689-694
頁數6
期刊Astrophysical Journal
605
發行號2 I
DOIs
出版狀態已出版 - 20 4月 2004

指紋

深入研究「Constraints on the cluster mass-temperature relation imposed by the diffuse X-ray background」主題。共同形成了獨特的指紋。

引用此