AN ANALYTIC MODEL OF THE PHYSICAL PROPERTIES OF GALAXY CLUSTERS

被引：42
作者：
Bulbul, G. Esra [1 ]
Hasler, Nicole [1 ]
Bonamente, Massimiliano [1 ,2 ]
Joy, Marshall [2 ]
机构：
[1] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
[2] NASA, George C Marshall Space Flight Ctr, Space Sci Off, Huntsville, AL 35812 USA
来源：
ASTROPHYSICAL JOURNAL | 2010年 / 720卷 / 02期
关键词：
galaxies:; individual; (Abell; 1835; Abell; 2204); X-rays: galaxies: clusters; X-RAY MEASUREMENTS; DARK ENERGY; CHANDRA OBSERVATIONS; GAS; TEMPERATURE; MASS; CONSTRAINTS; PROFILES; SAMPLE; COSMOLOGY;
D O I：
10.1088/0004-637X/720/2/1038
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We introduce an analytic model of the diffuse intergalactic medium in galaxy clusters based on a polytropic equation of state for the gas in hydrostatic equilibrium with the cluster gravitational potential. This model is directly applicable to the analysis of X-ray and Sunyaev-Zel'dovich effect observations from the cluster core to the virial radius, with five global parameters and three parameters describing the cluster core. We validate the model using Chandra X-ray observations of two polytropic clusters, MS 1137.5+6625 and CL J1226.9+3332, and two cool core clusters, 1835 and A2204. We show that the model accurately describes the spatially resolved spectroscopic and imaging data, including the cluster core region where significant cooling of the plasma is observed.
引用
收藏
页码：1038 / 1044
页数：7
相关论文
共 39 条
  • [1] Improved constraints on dark energy from Chandra X-ray observations of the largest relaxed galaxy clusters
    Allen, S. W.
    Rapetti, D. A.
    Schmidt, R. W.
    Ebeling, H.
    Morris, R. G.
    Fabian, A. C.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 383 (03) : 879 - 896
  • [2] Constraints on dark energy from Chandra observations of the largest relaxed galaxy clusters
    Allen, SW
    Schmidt, RW
    Ebeling, H
    Fabian, AC
    van Speybroeck, L
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 353 (02) : 457 - 467
  • [3] ARNAUD M, 2009, ARXIV09101234
  • [4] A phenomenological model of galaxy clusters
    Ascasibar, Y.
    Diego, J. M.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 383 (01) : 369 - 374
  • [5] The radial structure of galaxy groups and clusters
    Ascasibar, Y
    Yepes, G
    Müller, V
    Gottlöber, S
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 346 (03) : 731 - 745
  • [6] A Chandra archival study of the temperature and metal abundance profiles in hot galaxy clusters at 0.1 ≲ z ≲ 0.3
    Baldi, A.
    Ettori, S.
    Mazzotta, P.
    Tozzi, P.
    Borgani, S.
    [J]. ASTROPHYSICAL JOURNAL, 2007, 666 (02) : 835 - 845
  • [7] A MEASUREMENT OF THE VALUE OF THE HUBBLE CONSTANT FROM THE X-RAY-PROPERTIES AND THE SUNYAEV-ZELDOVICH EFFECT OF ABELL-665
    BIRKINSHAW, M
    HUGHES, JP
    ARNAUD, KA
    [J]. ASTROPHYSICAL JOURNAL, 1991, 379 (02) : 466 - 481
  • [8] EXPLORING THE ENERGETICS OF INTRACLUSTER GAS WITH A SIMPLE AND ACCURATE MODEL
    Bode, Paul
    Ostriker, Jeremiah P.
    Vikhlinin, Alexey
    [J]. ASTROPHYSICAL JOURNAL, 2009, 700 (02) : 989 - 999
  • [9] Markov Chain Monte Carlo joint analysis of Chandra X-ray imaging spectroscopy and Sunyaev-Zel'dovich effect data
    Bonamente, M
    Joy, MK
    Carlstrom, JE
    Reese, ED
    LaRoque, SJ
    [J]. ASTROPHYSICAL JOURNAL, 2004, 614 (01) : 56 - 63
  • [10] Scaling relations from Sunyaev-Zel'dovich effect and Chandra X-ray measurements of high-redshift galaxy clusters
    Bonamente, Massimiliano
    Joy, Marshall
    LaRoque, Samuel J.
    Carlstrom, John E.
    Nagai, Daisuke
    Marrone, Daniel P.
    [J]. ASTROPHYSICAL JOURNAL, 2008, 675 (01) : 106 - 114
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