create_cosmic_ray_spectral_model#
- gammapy.modeling.models.create_cosmic_ray_spectral_model(particle='proton')[source]#
Cosmic a cosmic ray spectral model at Earth.
These are the spectra assumed in this CTA study: Table 3 in https://ui.adsabs.harvard.edu/abs/2013APh….43..171B
The spectrum given is a differential flux
dnde
in units ofcm-2 s-1 TeV-1
, as the value integrated over the whole sky. To get a surface brightness you need to computednde / (4 * np.pi * u.sr)
. To get thednde
in a region of solid angleomega
, you need to computednde * omega / (4 * np.pi * u.sr)
.The hadronic spectra are simple power-laws, the electron spectrum is the sum of a power law and a log-normal component to model the “Fermi shoulder”.
- Parameters
- particle{‘electron’, ‘proton’, ‘He’, ‘N’, ‘Si’, ‘Fe’}
Particle type
- Returns
SpectralModel
Spectral model (for all-sky cosmic ray flux)