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Broken power law.
XSpec model.
A broken power law.
A(E) = K (E/1 keV)^-PhoInd1 for E <= BreakE A(E) = K BreakE^(PhoInd2-PhoInd1) * (E/1 keV)^(-PhoInd2) for E >= BreakE
xsbknpower Parameters
1 | PhoInd1 | power law
photon index for E < break energy |
2 | BreakE | break point
for the energy in keV |
3 | PhoInd2 | power law
photon index for E > break energy |
4 | norm (K) |
photons/keV/cm^2/s at 1 keV |
This information is taken from the XSpec User's Guide. Version 11.3.1 of the XSpec
models is supplied with CIAO 3.2.
For a list of known bugs and issues with the XSPEC models, please visit the XSPEC bugs page.
- sherpa
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- slang
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