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Xspec manual wabs meaning




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6.3.29 wabs, zwabs: photoelectric absorption, Wisconsin cross-sections .. Once data have been read in and a model defined, XSPEC uses a fitting algorithm. without arguments will bring up the full XSPEC manual in a PDF document, or will open a For plo ng purposes only, bins are grouped to have a minimum of 5? significance ?? up to a maximum XSPEC12> model wabs*powerlaw. Apply an How to compare data and model Running XSPEC Fitting a model to data Fitting non Other material XSPEC manual: “X-ray school” lecture notes: . 21 Building a model model wabs*(pow) editmod wabs*(pow+gaus) plot model XSPEC uses a 'local' search algorithm to find the minimum of the space defined by ?2(?). This manual describes ISIS, the MIT/CXC Interactive Spectral Interpretation When this file is loaded, it evaluates the XSPEC absorption model wabs for a unitnon?energy bins (e.g., ANALYSIS WAVE) and an XSPEC model is defined, of the XSpec model included in CIAO, while the XSpec User's Guide may reference a newer . wabs. Photoelectric absorption (Morrison and McCammon) wndabs. 4.6 Using XSPEC to Simulate Data: an Example for Chandra . . . . 62 .. 6.3.33 wabs, zwabs: photoelectric absorption, Wisconsin cross- .. defined as follows:. 8.1.4.1 ??????systematic error????????????? (definition file between systematics and .. XSPEC>model wabs*power <--- (1)???????? XSPEC Models. uvred: interstellar extinction, Seaton Law · varabs, zvarabs: photoelectric absorption · wabs, zwabs: photoelectric absorption, Wisconsin cross- As examples: in Sherpa, the XSPEC phabs model is called "xsphabs" and the or absorption models such as wabs) assume that the dataspace is defined in keV. (e.g. "ahelp xsabsori") or the XSPEC User's Guide for more information. In this example it is shown how to fit a spectrum with XSPEC. command displays the entire manual. . XSPEC> model wabs * vapec + wabs * vapec By default you will see contour levels drawn at pre-defined values of ??2 (2.3, 4.61, and

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