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To find and download HEASARC data in the cloud, you can use astroquery.heasarc or download our new tool, hark.

The HEASARC and NuSTAR teams are greatly saddened by the sudden passing of Katja Pottschmidt. Most recently Katja was the lead scientist for the NuSTAR Guest Observer Facility (GOF), a role she had supported for many years. During her science career she worked on many other high energy astrophysics missions and played an integral role in advancing our knowledge of the universe. She was a wonderful colleague and friend and will be keenly missed by all who knew her.

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Next: zxipcf: partial covering absorption Up: Multiplicative Model Components Previous: zvfeabs: photoelectric absorption with   Contents


zxipab: power-law distribution of ionized absorbers

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 ($10^{22}$cm$^{-2}$)
par2 nHmax: maximum equivalent hydrogen column density ($10^{22}$cm$^{-2}$)
par3 beta: power law index for covering fraction
par4 logxi: ionizing parameter $\log\xi$
par5 redshift