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astro-ph2000
Weak lensing mass reconstruction of MS1008.1-1224
M. Lombardi, P. Rosati, M. Nonino +3
We present an in-depth weak lensing analysis of the cluster MS1008 based on deep multicolor imaging obtained during the Science Verification of FORS1 at the VLT. The image quality…
astro-ph2000
The Most Distant X-ray Clusters and the Evolution of their Space Density
P. Rosati, S. Borgani, R. Della Ceca +3
We briefly review our current knowledge of the space density of distant X-ray clusters as measured by several ROSAT serendipitous surveys. We compare old and new determinations of…
astro-ph2000
A Hard Medium Survey with ASCA. III.: a Type 2 AGN revealed from X-ray Spectroscopy
R. Della Ceca, T. Maccacaro, P. Rosati +1
In this paper we report the discovery of an hard X-ray selected Type 2 Seyfert galaxy and we present and discuss its X-ray and optical spectrum together with the radio to X-ray ene…