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constant: energy-independent factor
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Multiplicative Model Components
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acisabs: Chandra ACIS q.e.
cabs: Optically-thin Compton scattering.
Optically-thin Compton scattering.
where
is the Thomson cross-section with Klein-Nishina corrections at high energies. Note that this model does not do frequency downshifting so is only valid for scattering out of the beam.
par1=
hydrogen column (in units of
atoms cm
)