
par1=  efolding energy for the absorption 
par2=  exponent index 
Caveat : the absorption for an energy bin is calculated as the arithmetic
mean of the function value at the start and end energies of the bin. If
the energy bins are large this can be inaccurate and the energies command
should be used to define a finer energy grid on which to calculate the model.
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Last modified: Tuesday, 28May2024 10:09:22 EDT