ISSN:
1572-9508
Keywords:
CCD detectors
;
CHANDRA
;
detector simulation
;
XMM
;
X-ray astronomy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Simulations of the XMM EPIC instruments are presented. They suggest the correct operating mode must be chosen to ensure that spectral analysis of the data is not compromised by ‘pile-up’ effects. The performanceis contrasted with the CHANDRA AXAF CCD Imaging Spectrometer, showing how the higher effective area but better over-sampling of its mirror response function in XMM, impacts this pile-up criteria. Targetsexceeding a flux of a few 10-12 ergs cm-2 s-1 will becompromised for spectral analysis in these CCD instruments, unlesscare is taken in defining correct instrument configurations. Somesimple methods of mitigating the effects are described, but this featureof X-ray pile-up warrants careful attention in calibration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008179519098
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