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By D. H. Lumb


We briefly describe the methods used in compiling a set of high galactic latitude background data. The characteristics and limitations of the data which affect their use as a template for analysing extended objects are described. We briefly describe a spectral fitting analysis of the data which reveals a normalisation for the extragalactic background of 11.4 keV cm −2 s −1 sr −1, which implies the fraction of hard X-ray background presently resolved by various Chandra observations is towards the lower limit of their estimates

Topics: Key words, Missions, XMM-Newton 1. introduction
Year: 2002
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