|AHELP for CIAO 4.6 Sherpa v2||
Power law with high energy exponential cutoff. XSpec model.
A power law with high energy exponential cutoff. The energy range must be positive and non-zero for this integrated model.
A(E) = KE^(-phoindx) exp(-E/highecut)
If POW_EMIN and POW_EMAX have been defined by the xset command (see 'ahelp set_xsxset'), then the norm becomes the flux in units of 10^-12 ergs/cm2/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.
This is an additive model component.
|1||phoindex||power law photon index|
|2||highecut||cutoff energy of exponential cutoff (in keV)|
|3||norm||K; photons/keV/cm^2/s at 1 keV|
This information is taken from the XSpec User's Guide. Version 12.8.0k of the XSpec models is supplied with CIAO 4.6.
For a list of known bugs and issues with the XSPEC models, please visit the XSPEC bugs page.
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