Brightest Cluster Galaxies and Core Gas Density in REXCESS Clusters (2009)
Haarsma, D. B., Leisman, L., Donahue, M., Bruch, S., Boehringer, H., Croston, J. H., ...
We investigate the relationship between brightest cluster galaxies (BCGs) and their host clusters using a sample of nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey...
Arnaud, M., Pratt, G. W., Piffaretti, R., Boehringer, H., Croston, J. H., Pointecouteau, E.
(abridged) We investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local clusters observed with XMM-Newton. The sample spans a mass range of 10^14 M_sun
Pratt, G. W., Arnaud, M., Piffaretti, R., Boehringer, H., Ponman, T. J., Croston, J. H., ...
(Abridged) We examine the radial entropy distribution and its scaling using 31 nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey (REXCESS). The entropy profiles are...
Stellar and Total Baryon Mass Fractions in Groups and Clusters Since Redshift 1 (2009)
Giodini, S., Pierini, D., Finoguenov, A., Pratt, G. W., Boehringer, H., Leauthaud, A., ...
We investigate if the discrepancy between estimates of the total baryon mass fraction obtained from observations of the cosmic microwave background (CMB) and of galaxy groups/clusters persists when a...
Stellar and total baryon mass fractions in groups and clusters since redshift 1 (2009)
Giodini, S., Pierini, D., Finoguenov, A., Pratt, G. W., Boehringer, H., Leauthaud, A., ...
We investigate if the discrepancy between estimates of the total baryon mass fraction obtained from observations of the cosmic microwave background (CMB) and of galaxy groups/clusters persists when a...
1. AN IMPROVED TECHIQUE FOR MEASUR- ING GAS DENSITY PROFILES (2009)
J. H. Croston, M. Arnaud, G. W. Pratt, H. Böhringer
We present an improved technique for the deprojection and PSF-deconvolution of X-ray surface brightness profiles of galaxy clusters. Our method is tested using simulated profiles, XMM-Newton and...
Pratt, G.W., Croston, J.H., Arnaud, M., Boehringer, H.
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO) DOI: 10.1051/0004-6361/200810994
Stellar and Total Baryon Mass Fractions in Groups and Clusters since Redshift 1 (2009)
Giodini, S., Pierini, D., Finoguenov, A., Pratt, G. W., Boehringer, H., Leauthaud, A., ...
Stellar and total baryon mass fractions in groups and clusters since redshift 1 (2009)
Giodini, S., Pierini, D., Finoguenov, A., Pratt, G. W., Böhringer, H., Leauthaud, A., ...
Pratt, G. W., Croston, J. H., Arnaud, M., Boehringer, H.
(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...
Croston, J. H., Pratt, G. W., Boehringer, H., Arnaud, M., Pointecouteau, E., Ponman, T. J., ...
We present a study of the structural and scaling properties of the gas distributions in the intracluster medium (ICM) of 31 nearby (z < 0.2) clusters observed with XMM-Newton, which together comprise...
A combined optical and X-ray view of merging galaxy clusters (2008)
Maurogordato, S., Ferrari, C., Benoist, C., Cappi, A., Mars, G., Soucail, G., ...
Croston, J.H., Pratt, G.W., Boehringer, H., Arnaud, M., Pointecouteau, E., Ponman, T.J., ...
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO). DOI: 10.1051/0004-6361:20079154
Maurogordato, S., Cappi, A., Ferrari, C., Benoist, C., Mars, G., Soucail, G., ...
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 observations have...
Calibration of the galaxy cluster M_500-Y_X relation with XMM-Newton (2007)
Arnaud, M., Pointecouteau, E., Pratt, G. W.
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 measurements from...
Boehringer, H., Schuecker, P., Pratt, G. W., Arnaud, M., Ponman, T. J., Croston, J. H., ...
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 relations between...
XMM-Newton observations of the eastern jet of SS 433 (2007)
Brinkmann, W., Pratt, G. W., Rohr, S., Kawai, N., Burwitz, V.
XMM-Newton observations of the eastern jet of SS 433 (2007)
Brinkmann, W., Pratt, G. W., Rohr, S., Kawai, N., Burwitz, V.
Temperature profiles of a representative sample of nearby x-ray galaxy clusters. (2007)
Pratt, G.W., Boehringer, H., Croston, J.H., Arnaud, M., Borgani, S., Finoguenov, A., ...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters (2007)
Pratt, G. W., Böhringer, H., Croston, J. H., Arnaud, M., Borgani, S., Finoguenov, A., ...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters (2007)
Pratt, G. W., Böhringer, H., Croston, J. H., Arnaud, M., Borgani, S., Finoguenov, A., ...
XMM-Newton observations of the eastern jet of SS433 (2006)
Brinkmann, W., Pratt, G. W., Rohr, S., Kawai, N., Burwitz, V.
The radio supernova remnant W50 hosts at its center the peculiar galactic X-ray binary SS 433. It shows a central spherical structure with two `ears' which are supposed to be formed by the...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters (2006)
Pratt, G. W., Boehringer, H., Croston, J. H., Arnaud, M., Borgani, S., Finoguenov, A., ...
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...
Croston, J. H., Arnaud, M., Pointecouteau, E., Pratt, G. W.
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 us to obtain...
X-ray observations of the mass and entropy distributions in nearby galaxy clusters (2006)
I review some important aspects of the structural and statistical properties of the nearby X-ray galaxy cluster population, discussing the new constraints on mass profiles, the mass-temperature...
XMM-Newton legacy clusters - an investigation into background removal (2006)
Temple, R. F., Pratt, G. W., Ponman, T. J., Böhringer, H., Raychaudhury, S., Rasmussen, J., ...
XMM-Newton legacy clusters - an investigation into background removal (2006)
Temple, R. F., Pratt, G. W., Ponman, T. J., Böhringer, H., Raychaudhury, S., Rasmussen, J., ...
Temperature profiles of a representative sample of nearby X-ray galaxy clusters. (2006)
Pratt, G.W., Boehringer, H., Croston, J.H., Arnaud, M., Borgani, S.
Croston, J.H., Arnaud, M., Pointcouteau, E., Pratt, G.W.
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory DOI: 10.1051/0004-6361:20065795
Arnaud, M., Pratt, G. W., Pointecouteau, E.
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 clusters from the SHARC...
Structure and scaling of the entropy in nearby galaxy clusters (2005)
Pratt, G. W., Arnaud, M., Pointecouteau, E.
Using XMM-Newton observations, we investigate the scaling and structural properties of the ICM entropy in a sample of 10 nearby (z < 0.2) relaxed galaxy clusters in the temperature range 2-9 keV. We...
Probing the dark matter profile of hot clusters and the M-T relation with XMM-Newton (2005)
Pointecouteau, E., Arnaud, M., Pratt, G. W.
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...
Further evidence for a merger in Abell 2218 from an XMM-Newton observation (2005)
Pratt, G. W., Boehringer, H., Finoguenov, A.
(Abridged) The galaxy cluster Abell 2218, at z=0.171, is well-known for the discrepancy between mass estimates derived from X-ray and strong lensing analyses. With the present XMM observation, we...
The structural and scaling properties of nearby galaxy clusters - II. The M-T relation (2005)
Arnaud, M., Pointecouteau, E., Pratt, G. W.
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 contrasts...
Pointecouteau, E., Arnaud, M., Pratt, G. W.
We present the integrated mass profiles for a sample of ten nearby (z
Merging clusters of galaxies observed with XMM-Newton (2005)
Belsole, E., Sauvageot, J-L., Pratt, G. W., Bourdin, H.
We present results from the XMM-Newton observations of our ongoing program on merging clusters. To date three clusters have been observed, covering the temporal sequence from early to late stage...
A3266: XMM/Newton view of a compact merging cluster (2005)
Sauvageot, J.L., Belsole, E., Pratt, G. W., Maurogordato, S., Bourdin, H.
An XMM-Newton observation of A3921: an off-axis merger (2004)
Belsole, E., Sauvageot, J-L., Pratt, G. W., Bourdin, H.
We present the results of a detailed analysis of the XMM-Newton observation of the galaxy cluster Abell 3921. The X-ray morphology of the cluster is elliptical, with the centroid offset from the...
(Abridged) We present an analysis of the mass and entropy profiles of three poor clusters (A1991, A2717 and MKW9) observed with XMM-Newton. The clusters have similar temperatures (kT=2.65, 2.53 and...
Pratt, G. W., Mukai, K., Hassall, B. J. M., Naylor, T., Wood, J. H.
In the optical and ultraviolet regions of the electromagnetic spectrum, UX Ursae Majoris is a deeply eclipsing cataclysmic variable. However, no soft X-ray eclipse was detected in ROSAT observations....
Optical and X-ray analysis of the galaxy cluster A3921 (2004)
Ferrari, C., Benoist, C., Maurogordato, S., Cappi, A., Slezak, E., Belsole, E., ...
Arnaud, M., Pratt, G. W., Pointecouteau, E.
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 clusters from the SHARC...
An XMM-Newton observation of the dynamically active binary cluster A1750 (2003)
Belsole, E., Pratt, G. W., Sauvageot, J-L., Bourdin, H.
We present results from the XMM-Newton observation of the binary cluster A1750 at z = 0.086. We have performed a detailed study of the surface brightness, temperature and entropy distribution and...
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 (~0.35 r_200). The...
Arnaud, M., Pratt, G. W., Pointecouteau, E.
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 clusters from the SHARC...
Arnaud, M., Pratt, G. W., Pointecouteau, E.
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 clusters from the SHARC...
The dynamical state of the Coma cluster with XMM-Newton (2002)
Neumann, D. M., Lumb, D. H., Pratt, G. W., Briel, U. G.
We present in this paper a substructure and spectroimaging study of the Coma cluster of galaxies based on XMM-Newton data. XMM-Newton performed a mosaic of observations of Coma to ensure a large...
The mass profile of A1413 observed with XMM-Newton: implications for the M-T relation (2002)
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. The gas...
Electronic Energy Levels of Intermediates in the Nickel Carbonylation Reaction. (2002)
Howard,I. A., Pratt,G. W., Johnson,K. H., Dresselhaus,G.
Using the multiple scattering X-alpha method, electronic energy levels have been found self-consistently for the intermediates Ni(CO)(n), n=1,2,3 in the formation of nickel tetracarbonyl via the...
XMM-Newton Observations of Galaxy Clusters: The Radial Temperature Profile of A2163 (2001)
Pratt, G. W., Arnaud, M., Aghanim, N.
XMM-Newton, with its high throughput and excellent spatial and spectral resolution, is an ideal instrument for spectro-imaging observation of clusters. Presented here is an XMM-Newton mosaic...
An investigation of the Hartree-Fock self-consistent field problem / (1952)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1952.
Acid hydrolysis of ad̲m̲ethyl glucoside and 6t̲osyl ad̲m̲ethyl glucoside / (1949)
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Chemistry, 1949.