gaussian smoothing. XSpec convolution model *Experimental*.
Gaussian smoothing with a variable width, which varies as the Index power of the energy. The width at 6 keV is set with the SigAt6keV parameter.
dC(E) = n(E) exp [ -0.5 * ((E-X)/S(E))^2 ] A(X) dX
n(E) = 1.0 / sqrt( e * pi * S(E)^2 )
S(E) = SigAt6keV (E/6)^Index
|1||SigAt6keV||The sigma for the gaussian at 6 keV (in keV)|
|2||Index||Power of energy for sigma variation|
Loading the X-Spec convolution models
Please see ahelp xsconvolve for information on how to load the model.
- This is an experimental release of the convolution models; please take care when using this model.
- The energy binning must be uniform.
This information is taken from the XSpec User's Guide. Version 12.10.0e of the XSpec models is supplied with CIAO 4.11.
sherpa> from sherpa_contrib.xspec.xsconvolve import load_xsgsmooth sherpa> load_xsgsmooth("gsm") sherpa> set_source(gsm(xspowerlaw.pl)) sherpa> gsm.index = 1.5 sherpa> gsm.sigat6kev = 0.5
The powerlaw is convolved by a gaussian whose sigma varies as Energy^1.5 and is 0.5 keV at 6 keV.
About Contributed Software
This script is not an official part of the CIAO release but is made available as "contributed" software via the CIAO scripts page. Please see this page for installation instructions - such as how to ensure that the parameter file is available.
For a list of known bugs and issues with the XSPEC models, please visit the XSPEC bugs page.
- list_model_components, list_models, load_xscflux, load_xsclumin, load_xscpflux, load_xsireflect, load_xskdblur, load_xskdblur2, load_xskerrconv, load_xslsmooth, load_xspartcov, load_xsrdblur, load_xsreflect, load_xsrfxconv, load_xsrgsxsrc, load_xssimpl, load_xsvashift, load_xsvmshift, load_xsxilconv, load_xszashift, load_xszmshift, models, tablemodel, xs, xsconvolve