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相关论文: A Universal Temperature Profile for Galaxy Cluster…

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We present the integrated mass profiles for a sample of ten nearby (z<=0.15), relaxed galaxy clusters, covering a temperature range of [2-9]keV, observed with XMM-Newton. The mass profiles were derived from the observed gas density and…

天体物理学 · 物理学 2009-11-10 E. Pointecouteau , M. Arnaud , G. W. Pratt

We present some of the results of an ongoing collaboration to sudy the dynamical properties of galaxy clusters by means of high resolution adiabatic SPH cosmological simulations. Results from our numerical clusters have been tested against…

天体物理学 · 物理学 2007-05-23 G. Yepes , Y. Ascasibar , S. Gottlober , V. Muller

We present the XMM-Newton temperature profiles of 12 bright clusters of galaxies at 0.4<z<0.9, with 5<kT<11 keV. The normalized temperature profiles (normalized by the mean temperature T500) are found to be generally self-similar. The…

宇宙学与河外天体物理 · 物理学 2015-06-05 Alessandro Baldi , Stefano Ettori , Silvano Molendi , Fabio Gastaldello

A study of the structural and scaling properties of the temperature distribution of the hot, X-ray emitting intra-cluster medium of galaxy clusters, and its dependence on dynamical state, can give insights into the physical processes…

天体物理学 · 物理学 2009-11-11 G. W. Pratt , H. Boehringer , J. H. Croston , M. Arnaud , S. Borgani , A. Finoguenov , R. F. Temple

In order to investigate the spatial distribution of the ICM temperature in galaxy clusters in a quantitative way and probe the physics behind, we analyze the X-ray spectra of a sample of 50 galaxy clusters, which were observed with the…

宇宙学与河外天体物理 · 物理学 2016-01-13 Zhenghao Zhu , Haiguang Xu , Jingying Wang , Junhua Gu , Weitian Li , Dan Hu , Chenhao Zhang , Liyi Gu , Tao An , Chengze Liu , Zhongli Zhang , Jie Zhu , Xiang-Ping Wu

We have derived azimuthally-averaged radial temperature profiles of the X-ray gas contained within 11 clusters of galaxies with redshift z=0.03-0.2 with BeppoSAX. Each of the 11 clusters have had their radial temperature profiles previously…

天体物理学 · 物理学 2009-10-31 Jimmy A. Irwin , Joel N. Bregman

Previous analyses of ASCA data of clusters of galaxies have found conflicting results regarding the slope of the temperature profile of the hot X-ray gas within clusters, mainly because of the large, energy-dependent point spread function…

天体物理学 · 物理学 2009-10-31 Jimmy A. Irwin , Joel N. Bregman , August E. Evrard

We present Chandra gas temperature profiles at large radii for a sample of 13 nearby, relaxed galaxy clusters and groups, which includes A133, A262, A383, A478, A907, A1413, A1795, A1991, A2029, A2390, MKW4, RXJ1159+5531, and USGC S152. The…

天体物理学 · 物理学 2007-05-23 A. Vikhlinin , M. Markevitch , S. S. Murray , C. Jones , W. Forman , L. Van Speybroeck

In this Letter we present the radial temperature profiles of three X-ray clusters (A119, A2255 and A2256) reconstructed from a combination of the X-ray surface brightness measurements and the universal density profile as the underlying dark…

天体物理学 · 物理学 2007-05-23 Yan-Jie Xue , Xiang-Ping Wu

Aims. We measure, as far out as possible, radial temperature profiles for a sample of ~50 hot, intermediate redshift galaxy clusters, selected from the XMM-Newton archive, keeping systematic errors under control. Methods. Our work is…

天体物理学 · 物理学 2009-11-13 A. Leccardi , S. Molendi

We have performed a series of N-body/hydrodynamical (TreeSPH) simulations of clusters and groups of galaxies, selected from cosmological N-body simulations within a $\Lambda$CDM framework: these objects have been re-simulated at higher…

天体物理学 · 物理学 2008-12-18 A. D. Romeo , J. Sommer-Larsen , L. Portinari , V. Antonuccio-Delogu

We jointly analyze Bolocam Sunyaev-Zeldovich (SZ) effect and Chandra X-ray data for a set of 45 clusters to derive gas density and temperature profiles without using spectroscopic information. The sample spans the mass and redshift range $3…

The Chandra and XMM data for a sample of 19 relaxed groups/poor clusters, covering the temperature range 1-3 keV and selected to have the best available data, reveal a remarkable similarity in their temperature profile: cool cores outside…

天体物理学 · 物理学 2007-05-23 F. Gastaldello , D. Buote , P. Humphrey , L. Zappacosta , J. Bullock , F. Brighenti , W. Mathews

We study the effects of radiative cooling, star formation and stellar feedback on the properties and evolution of galaxy clusters using high-resolution Adaptive Mesh Refinement N-body+gasdynamics simulations of clusters forming in the LCDM…

天体物理学 · 物理学 2009-11-10 Daisuke Nagai , Andrey V. Kravtsov

We report results from the analysis of 21 nearby galaxy clusters, 11 with cooling flow (CF) and 10 without cooling flow, observed with BeppoSAX. The temperature profiles of both CF and non-CF systems are characterized by an isothermal core…

天体物理学 · 物理学 2009-11-07 Sabrina De Grandi , Silvano Molendi

X-ray observations of galaxy clusters potentially provide powerful cosmological probes if systematics due to our incomplete knowledge of the intracluster medium (ICM) physics are understood and controlled. In this paper, we present mock…

天体物理学 · 物理学 2008-11-26 Daisuke Nagai , Alexey Vikhlinin , Andrey V. Kravtsov

We present simulations of the formation and evolution of galaxy clusters in the Cold Dark Matter cosmogony. Clusters with a wide range of mass were selected from previous N-body models, and were resimulated at higher resolution using a…

天体物理学 · 物理学 2015-06-24 Julio F. Navarro , Carlos S. Frenk , Simon D. M. White

Recently, Suzaku has produced temperature and entropy profiles, along with profiles of gas density, gas fraction, and mass, for multiple galaxy clusters out to ~r_200 (~= virial radius). In this paper, we compare these novel X-ray…

宇宙学与河外天体物理 · 物理学 2015-05-18 Jack O. Burns , Samuel W. Skillman , Brian W. O'Shea

There has been extensive recent progress in X-ray observations of clusters of galaxies with the analysis of the entire ASCA database and recent new results from Beppo-SAX, Chandra, and XMM-Newton. The temperature profiles of most clusters…

天体物理学 · 物理学 2007-05-23 Richard F. Mushotzky

We present ASCA temperature profiles and, when possible, crude temperature maps for a sample of bright clusters with 0.04<z<0.09. Together with several previously published clusters, the sample includes A85, A119, A399, A401, A478, A644,…

天体物理学 · 物理学 2009-10-30 M. Markevitch , W. R. Forman , C. L. Sarazin , A. Vikhlinin
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