Analysis of the AXAF HRMA+ACIS effective area measurements from the XRCF

被引：3

作者：

Allen, CL ^{[1
]}

Plucinsky, PP ^{[1
]}

McNamara, BR ^{[1
]}

Edgar, RJ ^{[1
]}

Schulz, NS ^{[1
]}

Woo, JW ^{[1
]}

机构：

[1] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

来源：

X-RAY OPTICS, INSTRUMENTS, AND MISSIONS | 1998年 / 3444卷

关键词：

AXAF; ACIS; HRMA; X-rays; calibration; charge coupled devices (CCD);

D O I：

10.1117/12.331237

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the analysis of effective area measurements for the AXAF High Resolution Mirror Assembly (HRMA) and the AXAF CCD Imaging Spectrometer (ACIS). The measurements were obtained at the X-Ray Calibration Facility (XRCF) in Huntsville, AL, during April 1997. Measurements obtained with two frontside-illuminated (FI) charge-coupled devices (CCDs) in the imaging array and the backside-illuminated (BI) CCD located on-axis in the spectroscopic array are considered. We compare the XRCF effective area measurements to independent, semiempirical model predictions constructed using the product of the efficiencies of the AXAF components (mirror, filter, CCD). The XRCF measurements, in general, confirm the reliability of the model at most energies, but only after correcting the data for several effects related to event pileup. However, after applying the corrections, the the uncertainties in the XRCF measurements remain uncomfortably large. We suggest several future avenues of investigation that should improve our knowledge of the HRMA+ACIS effective area.

引用

页码：198 / 209

页数：12

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