A simple gaussian line profile. If the width is 
then itis treated as a delta
function. The zgauss variant computes a redshifted gaussian.
where:
|
par1 = El |
line energy in keV |
|
par2 = s |
line width in keV |
|
Norm = K |
total photons cm-2 s-1 in the line |
For zgauss the corresponding formula is:
![A(E) = K/(sqrt(2*pi)*sigma^2*(1+z)) * exp(.5*[(E(1+z)-E_l)/sigma]^2)](XSmodelGaussian_files/image003.gif)
and parameter settings are:
|
par1 |
line energy in keV |
|
par2 |
line width in keV |
|
par3 |
redshift |
|
norm |
total photons cm–2s–1 in the line |
