Chandra point-source counts in distant galaxy clusters
نویسندگان
چکیده
منابع مشابه
A Chandra Study of the Circinus Galaxy Point-source Population
We have used the Chandra X-ray Observatory to resolve spatially and spectrally the X-ray emission from the Circinus Galaxy. We report here on the nature of the X-ray emission from the off-nuclear point sources associated with the disk of Circinus, which make up ≈ 34% of the total 0.5–10 keV emission. We find that many of the serendipitous X-ray sources are concentrated along the optical disk of...
متن کاملSimulations of Galaxy Clusters observed by Chandra
A software package able to simulate imaging observations of galaxy clusters by the Chandra X-ray telescope is here presented. We start from high resolution N-body hydrodynamical simulations of galaxy clusters and assign to each gas particle a spectrum of emissivity, after assuming the MeKaL model. We then construct spatial images of the source differential flux which are used to create lists of...
متن کاملSimulating Chandra observations of galaxy clusters
Numerical hydro-N-body simulations are very important tools for making theoretical predictions for the formation and evolution of galaxy clusters. Their results show that, accordingly with recent Chandra and XMM-Newton observations, the atmospheres of clusters of galaxies have quite complex angular and thermal structures, far from being spherically symmetric. In many cases the full understandin...
متن کاملQuantifying Substructure Using Galaxy-Galaxy Lensing in Distant Clusters
We present high-resolution mass reconstructions for five massive cluster-lenses spanning a redshift range from z = 0.18–0.57 utilizing archival Hubble Space Telescope (HST) data and applying galaxy-galaxy lensing techniques. These detailed mass models were obtained by combining constraints from the observed strong and weak lensing regimes. Quantifying the local weak distortions in the shear map...
متن کاملEisily Looking for Distant Galaxy Clusters
We present a new algorithm to search for distant clusters of galaxies on catalogues deriving from imaging data, as those of the ESO Imaging Survey. We discuss the advantages of our technique relative to the ones developed before and present preliminary results of its application to the I–band data of the survey’s
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20066196