Note that po and ga are additive models, and that wabs and phabs are multiplicative models.
| XSPEC> mo po | | The single component po (powerlaw) is the model. |
| XSPEC> mo po+ga | | |
| XSPEC> mo (po+ga)wabs | | |
| XSPEC> mo phabs(po+ga) | | |
| XSPEC> mo wa(phabs(po)+ga) | | |
| XSPEC> mo wa po phabs g | | Same model using old style syntax |
| XSPEC> mo wa*phabs*po | | |
| XSPEC> mo (po+po)phabs | | Note that though the first and second components are the same form, their parameters are varied separately. |
| XSPEC> mo phabs*wa(po) | | |
| XSPEC> mo pha(po)+ga+po/b | | Here po is a background model. |