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相关论文: Measuring Cluster Temperature Profiles with XMM/EP…

200 篇论文

We present an \xmm mosaic observation of the hot ($kT\sim6.5$ keV) and nearby ($z=0.0881$) relaxed cluster of galaxies A478. We derive precise gas density, gas temperature, gas mass and total mass profiles up to $12\arcmin$ (about half of…

天体物理学 · 物理学 2009-11-10 E. Pointecouteau , M. Arnaud , J. Kaastra , J. de Plaa

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

(Abridged) We examine the X-ray luminosity scaling relations of 31 nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey (REXCESS). The objects are selected in X-ray luminosity only, optimally sampling the…

天体物理学 · 物理学 2014-09-19 G. W. Pratt , J. H. Croston , M. Arnaud , H. Boehringer

Temperature maps are presented of the 9 largest clusters in the mock catalogues of Muanwong et al. for both the Preheating and Radiative models. The maps show that clusters are not smooth, featureless systems, but contain a variety of…

天体物理学 · 物理学 2009-11-07 Lesley I. Onuora , Scott T. Kay , Peter A. Thomas

We present joint South Pole Telescope (SPT) and XMM-Newton observations of 8 massive galaxy clusters (0.8--1.7$\times$10$^{15}$ M$_{\odot}$) spanning a redshift range of 0.16 to 0.35. Employing a novel SZ+X-ray fitting technique, we…

Many of the most luminous extragalactic radio sources are located at the centers of X-ray clusters, and so their radiation must be scattered by the surrounding hot gas. We show that radio observations of the highly-polarized scattered…

天体物理学 · 物理学 2009-11-07 Gilbert Holder , Abraham Loeb

We present results based on XMM-Newton observations of a small sample of hot galaxy clusters. Making a full use of XMM-Newton's spectro-imaging capabilities, we have extracted the radial temperature profile and gas density profile, and with…

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

This paper presents results of a spectroscopic analysis of the X-CLASS-redMaPPer (XC1-RM) galaxy cluster sample. X-CLASS is a serendipitous search for clusters in the X-ray wavebands based on the XMM-Newton archive, whereas redMaPPer is an…

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

We used a sample of 11 nearby relaxed clusters of galaxies observed with the X-ray instruments XMM-Newton (EPIC) pn and MOS, Chandra ACIS-S and ACIS-I and BeppoSAX MECS to examine the cross-calibration of the energy dependence and…

天体物理仪器与方法 · 物理学 2015-05-19 J. Nevalainen , L. David , M. Guainazzi

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…

We present a temperature map and a temperature profile of the central part (r < 20' or 1/4 virial radius) of the Coma cluster. We combined 5 overlapping pointings made with XMM/EPIC/MOS and extracted spectra in boxes of 3.5' X 3.5'. The…

We carry out a comprehensive joint analysis of high quality HST/ACS and Chandra measurements of A1689, from which we derive mass, temperature, X-ray emission and abundance profiles. The X-ray emission is smooth and symmetric, and the…

天体物理学 · 物理学 2009-11-13 Doron Lemze , Rennan Barkana , Tom J. Broadhurst , Yoel Rephaeli

We present maps and radial profiles of the gas temperature in the nearby galaxy clusters A2199 and A496, which have the most accurate ASCA spectral data for all hot clusters. These clusters are relaxed and can provide reliable X-ray mass…

天体物理学 · 物理学 2009-10-31 M. Markevitch , A. Vikhlinin , W. R. Forman , C. L. Sarazin

We present the X-ray properties and scaling relations of a large sample of clusters extracted from the Marenostrum MUltidark SImulations of galaxy Clusters (MUSIC) dataset. We focus on a sub-sample of 179 clusters at redshift z~0.11, with…

宇宙学与河外天体物理 · 物理学 2014-03-05 Veronica Biffi , Federico Sembolini , Marco De Petris , Riccardo Valdarnini , Gustavo Yepes , Stefan Gottlöber

In the outskirts of galaxy clusters, entropy profiles measured from X-ray observations of the hot intracluster medium (ICM) drops off unexpectedly. One possible explanation for this effect is gas clumping, where pockets of cooler and denser…

天体物理仪器与方法 · 物理学 2023-10-06 Christian T. Norseth , Daniel R. Wik , John A. ZuHone , Eric D. Miller , Marshall W. Bautz , Michael McDonald

X-ray observations were used to examine the complex temperature structure of Abell 85, a cool-core galaxy cluster. Temperature features can provide evidence of merging events which shock heat the intracluster gas. Temperature maps were made…

宇宙学与河外天体物理 · 物理学 2015-06-19 David Schenck , Abhirup Datta , Jack Burns , Sam Skillman

We present results from a large mosaic of Suzaku observations of the Coma Cluster, the nearest and X-ray brightest hot, dynamically active, non-cool core system, focusing on the thermodynamic properties of the ICM on large scales. For…

宇宙学与河外天体物理 · 物理学 2015-06-15 A. Simionescu , N. Werner , O. Urban , S. W. Allen , A. C. Fabian , A. Mantz , K. Matsushita , P. E. J. Nulsen , J. S. Sanders , T. Sasaki , T. Sato , Y. Takei , S. A. Walker

We present results of a 37 ks observation of CL 0016+16 with the XMM-Newton EPIC instrument. Within 1.5 arcmin of the cluster centre we measure a gas temperature of kT = 9.13^{+0.24}_{-0.22} keV and an abundance of 0.22^{+0.04}_{-0.03}…

天体物理学 · 物理学 2009-11-07 D. M. Worrall , M. Birkinshaw