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Sensitivity Analysis Applied to Atomic Data Used for X-ray Spectrum SynthesisA great deal of work has been devoted to the accumulation of accurate quantities describing atomic processes for use in analysis of astrophysical spectra. But in many situations of interest the interpretation of a quantity which is observed, such as a line flux, depends on the results of a modeling- or spectrum synthesis code. The results of such a code depends in turn on many atomic rates or cross sections, and the sensitivity of the observable quantity on the various rates and cross sections may be non-linear and if so cannot easily be derived analytically. This paper describes simple numerical experiments designed to examine some of these issues. Similar studies have been carried out previously in the context of solar UV lines by Gianetti et al. (2000); Savin & Laming (2002) and in the context of the iron M shell UTA in NGC 3783 by Netzer (2004).
Document ID
20060052428
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Kallman, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
August 1, 2006
Publication Information
Publication: Proceedings of the NASA Laboratory Astrophysics Workshop
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Public Use Permitted.

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