A simple gaussian line profile. If the width is then it is treated as a delta function. The zgauss variant computes a redshifted gaussian.
|par1||, line energy in keV|
|par2||, line width in keV|
|Norm||, total photons/cm/s in the line|
For zgauss the corresponding formula is:
and parameter settings are:
|par1||, source frame line energy in keV|
|par2||, source frame line width in keV|
|Norm||, source frame total photons/cm/s in the line|
The line is truncated at the point that the integrated flux under the line is within a critical value of the total flux. This critical value can be changed using xset LINECRITLEVEL. The default critical value is .