Velocity shift a multiplicative model. XSpec convolution model *Experimental*.
This convolution model velocity shifts a multiplicative model. It takes the calculated model and shifts energies by -Ev/c.
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.
- Sherpa does not have an equivalent of the extend command in X-Spec.
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_xsvmshift sherpa> load_xsvmshift("vms") sherpa> set_source(xsphabs.gal * vms(xsphabs.zgal) * xspowerlaw.pl)) sherpa> vms.velocity = -6000
The power-law is multiplied by both a velocity-shifted (zgal) and local (gal) absorption.
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_xsgsmooth, 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_xsxilconv, load_xszashift, load_xszmshift, models, tablemodel, xs, xsconvolve