** Next:** bkn2pow: broken power law,
**Up:** Additive Model Components
** Previous:** bexriv: reflected e-folded broken

##

bknpower: broken power law

A broken power law.

where:

par1 = |
power law photon index for |

par2 = |
break point for the energy in keV |

par3 = |
power law photon index for |

norm = K |
photons/keV/cm/s at 1 keV |

If POW_EMIN and POW_EMAX have been defined by the xset command then
the norm becomes the flux in units of ergs/cm/s over the
energy range (POW_EMIN, POW_EMAX) keV unless POW_EMIN = POW_EMAX in
which case the norm becomes the flux density in micro-Jansky at
POW_EMIN keV. In these cases it is important that POW_EMIN and
POW_EMAX lie within the energy range on which the model is being
evaluated.