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Galaxy cluster X-ray luminosity scaling relations from a representative local sample (REXCESS)
G. W. Pratt, J. H. Croston, M. Arnaud +1
(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 sel…
An SZ/X-ray galaxy cluster model and the X-ray follow-up of the Planck clusters
A. Chamballu, J. G. Bartlett, J. -B. Melin +1
Sunyaev-Zel'dovich (SZ) cluster surveys will become an important cosmological tool over next few years, and it will be essential to relate these new surveys to cluster surveys in o…
Non thermal emission in clusters of galaxies
M. Arnaud
I briefly review our current knowledge of the non thermal emission from galaxy clusters and discuss future prospect with Simbol-X. Simbol-X will map the hard X-ray emission in clus…
Science with Simbol-X
F. Fiore, M. Arnaud, U. Briel +20
Simbol-X is a French-Italian mission, with a participation of German laboratories, for X-ray astronomy in the wide 0.5-80 keV band. Taking advantage of emerging technology in mirro…
A2163: Merger events in the hottest Abell galaxy cluster I. Dynamical analysis from optical data
S. Maurogordato, A. Cappi, C. Ferrari +7
We present a detailed optical analysis of the galaxy cluster A2163 based on new multicolor wide field imaging and medium-to-high resolution (R~2000) spectroscopy. While X-ray obser…
Calibration of the galaxy cluster M_500-Y_X relation with XMM-Newton
M. Arnaud, E. Pointecouteau, G. W. Pratt
The quantity Y_ X, the product of the X-ray temperature T_ X and gas mass M_ g, has recently been proposed as a robust low-scatter mass indicator for galaxy clusters. Using precise…
The Representative XMM-Newton Cluster Structure Survey (REXCESS) of an X-ray Luminosity Selected Galaxy Cluster Sample
H. Boehringer, P. Schuecker, G. W. Pratt +31
The largest uncertainty for cosmological studies using clusters of galaxies is introduced by our limited knowledge of the statistics of galaxy cluster structure, and of the scaling…
Temperature profiles of a representative sample of nearby X-ray galaxy clusters
G. W. Pratt, H. Boehringer, J. H. Croston +4
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…
An improved deprojection and PSF-deconvolution technique for galaxy-cluster X-ray surface-brightness profiles
J. H. Croston, M. Arnaud, E. Pointecouteau +1
We have developed a regularisation procedure for the direct deprojection and PSF-deconvolution of X-ray surface brightness profiles of clusters of galaxies. This procedure allows u…
Chandra observation of the multiple merger cluster Abell 521
C. Ferrari, M. Arnaud, S. Ettori +2
We present the Chandra analysis of the galaxy cluster A521 (z=0.247). The high resolution of the Chandra observation has allowed us to refine the original merging scenario proposed…
X-ray observations of Clusters of Galaxies
M. Arnaud
X-ray observations of clusters provide key information on the dark matter, on the formation of structures in the Universe, and can be used to constrain the cosmological parameters.…
Probing the dark matter profile of hot clusters and the M-T relation with XMM-Newton
E. Pointecouteau, M. Arnaud, G. W. Pratt
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…
The structural and scaling properties of nearby galaxy clusters - II. The M-T relation
M. Arnaud, E. Pointecouteau, G. W. Pratt
Using a sample of ten nearby (z< 0.15), relaxed galaxy clusters in the temperature range [2-9] keV, we have investigated the scaling relation between the mass at various density co…
The structural and scaling properties of nearby galaxy clusters: I - The universal mass profile
E. Pointecouteau, M. Arnaud, G. W. Pratt
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…
Introducing BAX: a database for X-ray clusters and groups of galaxies
R. Sadat, A. Blanchard, M. Arnaud +4
We present BAX, Base de Donnees Amas de Galaxies X (http://webast.ast.obs-mip.fr/bax), a multi-wavelength database dedicated to X-ray clusters and groups of galaxies allowing detai…
XMM-Newton observation of the relaxed cluster A478: gas and dark matter distribution from 0.01 R_200 to 0.5 R_200
E. Pointecouteau, M. Arnaud, J. Kaastra +1
We present an \xmm mosaic observation of the hot ( keV) and nearby () relaxed cluster of galaxies A478. We derive precise gas density, gas temperature, gas mas…
Structural and scaling properties of galaxy clusters: probing the physics of structure formation
M. Arnaud, G. W. Pratt, E. Pointecouteau
We present XMM-Newton studies of the total mass, gas density, temperature and entropy profiles in nearby hot and cool clusters, together with follow-up observations of distant clus…
The origin of X-ray emission of two distant (z>1) cluster candidate with XMM-Newton
D. M. Neumann, M. Arnaud, C. Benoist +8
We present here a study of XMM-Newton data of two distant galaxy cluster candidates. One of these was discovered serendipitously in near infrared data, CL J0533-2411, the other one…
Entropy scaling in galaxy clusters: insights from an XMM-Newton observation of the poor cluster A1983
G. W. Pratt, M. Arnaud
An XMM-Newton observation of the cool (kT=2.1 keV) cluster A1983, at z=0.044, is presented. Gas density and temperature profiles are calculated for the inner 500 h_{50}^{-1} kpc (~…
The mass profile of A1413 observed with XMM-Newton: implications for the M-T relation
G. W. Pratt, M. Arnaud
We present an XMM-Newton observation of A1413, a hot (kT = 6.5 keV) galaxy cluster at z=0.143. We construct gas and temperature profiles up to ~1700 kpc, equivalent to ~0.7 r_200.…
XMM-Newton observation of the distant (z=0.6) galaxy cluster RX J1120.1+4318
M. Arnaud, S. Majerowicz, D. Lumb +12
We report on a 20 ksec XMM observation of the distant cluster RXJ1120.1+4318, discovered at z=0.6 in the SHARC survey. The cluster has a regular spherical morphology, suggesting it…
XMM-Newton GT and AO-1 observations of SHARC galaxy clusters : RX J1120.1+4318 and RX J0256.5+0006
Sebastien Majerowicz, Monique Arnaud, David Lumb +1
We present the follow-up of two galaxy clusters from the Bright and Southern SHARC surveys observed with the XMM-Newton satellite. We studied the galaxy cluster RX J1120.1+4318 whi…
X-ray Evidence for Spectroscopic Diversity of Type Ia Supernovae: XMM observation of the elemental abundance pattern in M87
A. Finoguenov, K. Matsushita, H. Boehringer +2
We present the results of a detailed element abundance study of hot gas in M87, observed by XMM-Newton. We choose two radial bins, 1'-3' and 8'-16' (8'-14' for EMOS; hereafter the…
A multiscale regularized restoration algorithm for XMM-Newton data
H. Bourdin, E. Slezak, A. Bijaoui +1
We introduce a new multiscale restoration algorithm for images with few photons counts and its use for denoising XMM data. We use a thresholding of the wavelet space so as to remov…