A trade-off study of the WFI field of view
Date Issued
2015
Author(s)
Abstract
We performed a trade-off study of the Athena WFI field of view (f.o.v.) taking into account a square and a circular f.o.v. In the latter case, the WFI corners would not be exposed to cosmic X-rays and could be used as particle background monitors, simultaneously to the observation. The resulting loss of area would concern only regions of low sensitivity. So, how many and which kind of AGN would be lost? In this poster we report some results derived from simple computations; for both of the two f.o.v. shapes, we folded the Aird+10 XLF with the Athena sky-coverage (assuming the CDF2 configuration and Gamma=1.8) of a deep (700 ks) pointing to derive the number of detectable AGN. Although the absolute numbers are affected by huge uncertainties, the relative numbers (i.e. the fraction of AGN retrieved with the circular f.o.v. with respect to the square f.o.v.) depend only on the different sky-coverages and are therefore much more robust.
Coverage
Exploring the Hot and Energetic Universe: The first scientific conference dedicated to the Athena X-ray observatory
Start page
48
Conferenece
Exploring the Hot and Energetic Universe: The first scientific conference dedicated to the Athena X-ray observatory.
Conferenece place
ESA/ESAC, Villafranca del Castillo, Madrid, Spain
Conferenece date
8-10 September 2015
Ads BibCode
2015eheu.conf...48V
Rights
open.access
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FVito_p.pdf
Size
1.49 MB
Format
Adobe PDF
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