The dynamical state of massive galaxy clusters

被引：0

作者：

Cypriano, E. S. ^{[1
,2
]}

Sodre, L., Jr. ^{[3
]}

Kneib, J. -P. ^{[4
]}

Campusano, L. E. ^{[5
]}

机构：

[1] SOAR Telescope, Casilla 603, La Serena, Chile

[2] Lab Nacl Astrofis, BR-37500000 Itajuba, MG, Brazil

[3] Univ Sao Paulo, Dept Astron, Inst Astron Geofis & Cincias Atmosfer, BR-05508090 Sao Paulo, Brazil

[4] Lab Astrophys Marseille, F-13376 Marseille 12, France

[5] Univ Chile, Dept Astron, Santiago, Chile

来源：

XI IAU REGIONAL LATIN AMERICAN MEETING OF ASTRONOMY | 2006年 / 26卷

关键词：

galaxy : clusters : general; gravitational lensing;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the mass distribution of a sample of 24 X-ray bright Abell clusters through weak gravitational lensing. This method is independent of the dynamical state of the galaxy cluster. Hence, by comparing dynamical and lensing mass estimators, we can access the dynamical state of these clusters. We have found that clusters with ICM temperatures above 8 keV show strong deviations from the relaxation, as well as the presence of prominent sub-structures. For the remaining clusters (the majority of the sample) we have found agreement among the several mass estimators, which indicates that most of the clusters are in or close to a state of dynamical equilibrium. https://arxiv.org/pdf/astro-ph/0604205.pdf

引用

页码：111 / +

页数：2

共 4 条

[1] Weak-lensing mass distributions for 24 X-ray Abell clusters [J].

Cypriano, ES ;

Sodre, L ;

Kneib, JP ;

Campusano, LE .

ASTROPHYSICAL JOURNAL, 2004, 613 (01) :95-108

[2] Evolution of the internal dynamics of galaxy clusters [J].

Girardi, M ;

Mezzetti, M .

ASTROPHYSICAL JOURNAL, 2001, 548 (01) :79-96

[3] Merger shocks in galaxy clusters A665 and A2163 and their relation to radio halos [J].

Markevitch, M ;

Vikhlinin, A .

ASTROPHYSICAL JOURNAL, 2001, 563 (01) :95-102

[4] Abell 1451 and 1RXS J131423.6-251521:: A multi-wavelength study of two dynamically perturbed clusters of galaxies [J].

Valtchanov, I ;

Murphy, T ;

Pierre, M ;

Hunstead, R ;

Lémonon, L .

ASTRONOMY & ASTROPHYSICS, 2002, 392 (03) :795-805

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