文章基本信息

标题：XMM-Newton survey of IGM: news for the modified entropy scaling
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作者：A. Finoguenov ; S. Borgani ; D.S. Davis, J.S.,Mulchaey 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2004
卷号：2004
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Results of XMM-Newton survey of 40 galaxy groups are presented with accent on the global properties of the gas, such as entropy and pressure. We conrm the modied entropy scaling relation of Ponman, Sanderson & Finoguenov (2003) at central parts of the groups (0 1r500). At the same time, we show distinct differences between the virialized groups and emission originated from halos of early-type galaxies. The slopes of the entropy proles of the groups are on average atter than 1.1 law, typical of the clusters. We present the results of numerical simulations using the P-GADGET-II code, which are the rst simulations capable to reproduce these newly observed trends.