7 papers
New results on clusters of galaxies observed with XMM-Newton
D. M. Neumann, S. Majerowicz
Clusters of galaxies contain a hot gas, which emits in X-rays. X-ray telescopes such as XMM-Newton allow to study this plasma to obtain information on physical quantities of these…
The REFLEX Galaxy Cluster Survey IV: The X-ray Luminosity Function
H. Boehringer, C. A. Collins, L. Guzzo +10
The X-ray galaxy cluster sample from the REFLEX Cluster Survey, which covers the X-ray brightest galaxy clusters detected in the ROSAT All-Sky Survey in the southern sky, is used t…
The XMM-Newton Project
J. G. Bartlett, N. Aghanim, M. Arnaud +16
The abundance of high-redshift galaxy clusters depends sensitively on the matter density $\OmM$ and, to a lesser extent, on the cosmological constant . Measurements of this abun…
Optical follow-up of the REFLEX survey: a new perspective in cluster studies
L. T. Barone, E. Molinari, H. Boehringer +8
After the completion of the catalogue built with ESO key program (REFLEX), we are beginning to explore the multiband optical characteristics of a subsample of those clusters select…
Regularity in the X-ray surface brightness profiles of galaxy clusters and the M-T relation
Doris M. Neumann, Monique Arnaud
We used archival ROSAT observations to investigate the X-ray surface brightness profiles of a sample of 26 clusters in the redshift range (0.04-0.06). For 15 of these clusters accu…
Results from the REFLEX Cluster Survey
H. Böhringer, L. Guzzo, C. A. Collins +11
Based on the ROSAT All-Sky Survey we have conducted a large redshift survey as an ESO key programme to identify and secure redshifts for the X-ray brightest clusters found in the s…