Skip to main content

HEASoft and XSPEC are now available as conda packages. See details ....

next up previous contents
Next: wabs, zwabs: photoelectric absorption, Up: Multiplicative Model Components Previous: voigtabs, zvoigtabs: voigt absorption   Contents


vvoigtabs, zvvoigtabs: voigt absorption line with widths in km/s

A voigt absorption line with line widths in km/s as a multiplicative model. The zvvoigtabs variant includes redshift as a parameter.

$\displaystyle M(E) = exp(-d*v(E)) $

where $v(E)$ is the voigt line shape (see vvoigt for details), and the parameters are:

par1 $E_l$, line energy in keV.
par2 $\sigma$, gaussian line width (sigma) in km/s.
par3 $\gamma$, lorentz line width (FWHM) in km/s.
par4 $d$, line depth in keV.

For zvvoigtabs the parameters are:

par1 $E_l$, line energy in keV.
par2 $\sigma$, gaussian line width (sigma) in km/s.
par3 $\gamma$, lorentz line width (FWHM) in km/s.
par4 $d$, line depth in keV.
par5 $z$, redshift
next up previous contents
Next: wabs, zwabs: photoelectric absorption, Up: Multiplicative Model Components Previous: voigtabs, zvoigtabs: voigt absorption   Contents