This is an extension of the pwab model in which the complex absorption is modelled as a power-law distribution of covering fraction and column of ionised absorbers. Unlike pwab, which is based on neutral absorbers, zxipab utilizes pre-calculated grid of XSTAR photo-ionisation model also used by zxipcf model, with ionising parameter log (xi). See Islam & Mukai (2021) for details.
|par1||nHmin: minimum equivalent hydrogen column density (cm)|
|par2||nHmax: maximum equivalent hydrogen column density (cm)|
|par3||beta: power law index for covering fraction|
|par4||logxi: ionizing parameter|