Skip to main content

Xspec Home Page

next up previous contents
Next: gadem, vgadem, vvgadem, bgadem, Up: Additive Model Components Previous: fekblor, zfekblor, bfekblor, zbfekblor:   Contents


feklor, zfeklor, bfeklor, zbfeklor: Fe K$\alpha $ line at high resolution

A seven Lorentzian approximation to the line profile of Fe K$\alpha $ from neutral material. The energies, widths, and relative amplitudes for the Lorentzians are taken from Holzer et al (1997) and are:

Energy (eV) Width (eV) Amplitude  
6404.148 1.613000 0.278  
6403.295 1.965000 0.182  
6400.653 4.833000 0.106  
6402.077 2.803000 0.094  
6391.190 2.487000 0.207  
6389.106 2.339000 0.066  
6390.275 4.433000 0.065  

The only parameter for feklor is the normalization (the total photons/cm$^2$/s in the line) while zfeklor has an additional parameter for the redshift.

bfeklor velocity-broadens the feklor model (thus making it the sum of 7 Voigt profiles) with the parameter being the velocity $\sigma$ in km/s. zbfeklor adds an additional parameter for the redshift.