Vblo: rectangular velocity broadening model¶
This multiplicative model broadens an arbitrary additive component with a rectangular Doppler profile, characterized by the half-width \(v\). Therefore if a delta-line at energy \(E\) is convolved with this component, its full energy width will be \(2Ev/c\), and line photons get a rectangular distribution between \(E-Ev/c\) and \(E+Ev/c\). Of course, any line or continuum emission component can be convolved with the this broadening model.
The parameters of the model are:
vblo : Velocity broadening half-width \(v\), in km/s. Default
value: 3000 km/s.