Skip to main content

Due to the lapse in federal government funding, NASA is not updating this website. We sincerely regret this inconvenience.

Xspec Home Page

next up previous contents
Next: feklor, zfeklor, bfeklor, zbfeklor: Up: Additive Model Components Previous: ezdiskbb: multiple blackbody disk   Contents


fekblor, zfekblor, bfekblor, zbfekblor: Fe K$\beta $ line at high resolution

A four Lorentzian approximation to the line profile of Fe K$\beta $ 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  
7046.90 14.17 0.301  
7057.21 3.12 0.279  
7058.36 1.97 0.241  
7054.75 6.38 0.179  

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

bfekblor velocity-broadens the fekblor model (thus making it the sum of 4 Voigt profiles) with the parameter being the velocity $\sigma$ in km/s. zbfekblor adds an additional parameter for the redshift.