power_law_evaluate

gammapy.spectrum.powerlaw.power_law_evaluate(energy, norm, gamma, energy_ref)

Differential flux at a given energy.

$$f(energy) = N (E / E_0) ^ - \Gamma$$

with norm N, energy E, reference energy E0 and spectral index $\Gamma$.

Parameters:

energy : array_like

Energy at which to compute the differential flux

gamma : array_like

Power law spectral index