A Lorentzian line profile.
where:
par1 | , line energy in keV |
par2 | , FWHM line width in keV |
norm | , 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
.