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.

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:

 

 

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