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On Calibrations Using the Crab Nebula as a Standard CandleInspired by a recent paper (Kirsch et al. 2005) on possible use of the Crab Nebula as a standard candle for calibrating X-ray response func tions, we examine possible consequences of intrinsic departures from a single (absorbed) power law upon such calibrations. We limited our analyses to three more modern X-ray instruments -- the ROSAT/PSPC, th e RXTE/PCA, and the XMM-Newton/EPIC-pn. The results are unexpected an d indicate a need to refine two of the three response functions studi ed. The implications for Chandra will be discussed.
Document ID
20090037682
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Weisskopf, Martin
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Guainazzi, Matteo
(European Space Agency Villafranca, Spain)
Jahoda, Keith
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shaposhnikov, Nikolai
(Maryland Univ. United States)
ODell, Stephen
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Zavlin, Vyacheslav
(Universities Space Research Association Huntsville, AL, United States)
Wilson-Hodge, Colleen
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Elsner, Ronald
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
September 21, 2009
Subject Category
Astronomy
Report/Patent Number
M09-0752
Meeting Information
Meeting: Chandra Calibration Workshop
Location: Boston, MA
Country: United States
Start Date: September 21, 2009
Distribution Limits
Public
Copyright
Other

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