The XSPEC c6pmekl model: differential emission measure using Chebyshev representations with multi-temperature mekal.
xsc6pmekl The xsc6pmekl model is an additive model component.
The model is described at  . It differs from XSc6mekl by by using the exponential of the 6th order Chebyshev polynomial.
>>> create_model_component("xsc6pmekl", "mdl") >>> print(mdl)
Create a component of the xsc6pmekl model and display its default parameters. The output is:
mdl Param Type Value Min Max Units ----- ---- ----- --- --- ----- mdl.CPcoef1 thawed 1 -1 1 mdl.CPcoef2 thawed 0.5 -1 1 mdl.CPcoef3 thawed 0.5 -1 1 mdl.CPcoef4 thawed 0.5 -1 1 mdl.CPcoef5 thawed 0.5 -1 1 mdl.CPcoef6 thawed 0.5 -1 1 mdl.nH frozen 1 1e-05 1e+19 cm^-3 mdl.abundanc frozen 1 0 10 mdl.redshift frozen 0 -0.999 10 mdl.switch frozen 1 0 2 mdl.norm thawed 1 0 1e+24
The attributes for this object are:
CPcoef1, CPcoef2, CPcoef3, CPcoef4, CPcoef5, CPcoef6
Chebyshev polynomial coefficients.
H density, in cm^-3.
The abundance relative to Solar, as set by set_xsabund .
The redshift of the plasma.
If 0, the mekal code is run to evaluate the model; if 1 then interpolation of the mekal data is used; if 2 then interpolation of APEC data is used. See  for more details. This parameter can not be thawed.
The normalization of the model.
-  https://heasarc.gsfc.nasa.gov/xanadu/xspec/manual/XSmodelC6mekl.html
CIAO 4.12 comes with support for version 12.10.1n of the XSPEC models. This can be checked with the following:
% python -c 'from sherpa.astro import xspec; print(xspec.get_xsversion())' 12.10.1n
See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.