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gauss, zgauss: gaussian line profile

A simple gaussian line profile. If the width is then itis treated as a delta function. The zgauss variant computes a redshifted gaussian.

A(E) = K/(sigma*sqrt(2*pi)) * exp(-(E-E_l)^2/(2*sigma^2))

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:


\begin{displaymath}
A(E) = K{(1+z)\over{\sigma*\sqrt{2*\pi}}} \exp\left({-(E(1+z)-E_l)^2\over{2\sigma^2}}\right)
\end{displaymath}

and parameter settings are:

par1=E_l

line energy in keV

par2=sigma

line width in keV

par3=z

redshift

norm=K

total photons cm2s1 in the line

 

next up previous contents
Next: Gnei Up: Additive Model Components Previous: Gadem