CRAB_HEGRA

pyirf.spectral.CRAB_HEGRA = PowerLaw(2.83e-11 1 / (TeV s cm2) * (E / 1.0 TeV)**-2.62)

Power Law parametrization of the Crab Nebula spectrum as published by HEGRA

From “The Crab Nebula and Pulsar between 500 GeV and 80 TeV: Observations with the HEGRA stereoscopic air Cherenkov telescopes”, Aharonian et al, 2004, ApJ 614.2 doi.org/10.1086/423931