On mass and shape of galaxy clusters by comparison of X-ray, Sunyaev-Zel'dovich effect, and gravitational lensing observations

被引：4
作者：
Sereno, M. [1 ,2 ]
Umetsu, K. [3 ]
Ettori, S. [4 ,5 ]
Baldi, A. [4 ,6 ]
机构：
[1] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy
[2] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
[3] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan
[4] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy
[5] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy
[6] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy
来源：
ASTRONOMISCHE NACHRICHTEN | 2013年 / 334卷 / 4-5期
关键词：
galaxies: clusters: general; galaxies: clusters: individual: (Abell 1689); galaxies: clusters: intracluster medium; methods: statistical; X-rays: galaxies: clusters; DARK-MATTER HALOES; ABELL; 1689; 3-DIMENSIONAL STRUCTURE; ELLIPTIC GALAXIES; A1689; WEAK; GAS; APPARENT; PROLATE; OBLATE;
D O I：
10.1002/asna.201211876
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The accurate determination of the mass of galaxy clusters is crucial to precision astronomy. We have often to deal with either biased measurements or precise determinations of peculiar quantities. A better understanding of intrinsic shapes plays a major role. We consider how the shape of the intracluster medium (ICM) can be inferred by combining X-ray photometry and spectroscopy with the measurement of the Sunyaev-Zel'dovich effect (SZe). Together with gravitational lensing (GL), we can get unbiased estimates of mass and concentration and probe the hydrodynamical properties of the cluster. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：445 / 448
页数：4
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