1 Epic in Orbit Background
نویسنده
چکیده
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 extragalac-tic 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.
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تاریخ انتشار 2002