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Proceedings Paper

Absolute calibration of the Chandra X-ray Observatory: transfer standard solid state detectors
Author(s): Shokrollah R. Serej; Edwin M. Kellogg; Richard J. Edgar; Frank Scholze; Gerhard Ulm
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Paper Abstract

In order to achieve as close as possible to the ground calibration goal of approximately equals 1-2 percent for the Chandra X-ray Observatory, two high purity solid state detectors (SSDs) were used as transfer standards for measuring absolute x-ray flux. The calibration of these SSDs are based on the analysis of data obtained on various monochromatic and undispersed synchrotron beamlines at the BESSY electron storage ring in Berlin, Germany. Here we report on our updated analysis for determining the detector response function in the energy range 2.1-5.9 keV and on our recently completed analysis of the response function and detection efficiency measurements in the energy range 0.4-1.7 keV. The response function model used for spectral analysis of the data is based on the HYPERMET function, which is included in JMKmod within the XSPEC package.

Paper Details

Date Published: 22 October 1999
PDF: 12 pages
Proc. SPIE 3765, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X, (22 October 1999); doi: 10.1117/12.366563
Show Author Affiliations
Shokrollah R. Serej, Smithsonian Astrophysical Observatory (United States)
Edwin M. Kellogg, Smithsonian Astrophysical Observatory (United States)
Richard J. Edgar, Smithsonian Astrophysical Observatory (United States)
Frank Scholze, Physikalisch-Technische Bundesanstalt (Germany)
Gerhard Ulm, Physikalisch-Technische Bundesanstalt (Germany)

Published in SPIE Proceedings Vol. 3765:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X
Oswald H. W. Siegmund; Kathryn A. Flanagan, Editor(s)

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