PhotonComponent

class astropy.cosmology.traits.PhotonComponent

Bases: object

The cosmology has attributes and methods for the photon density.

Methods Summary

Ogamma(z)

Return the density parameter for photons at redshift z.

Methods Documentation

Ogamma(z)

Return the density parameter for photons at redshift z.

Parameters:

zQuantity-like [‘redshift’], numpy:array_like

Input redshift.

Changed in version 7.0: Passing z as a keyword argument is deprecated.

Returns:

Ogammaarray

The energy density of photons relative to the critical density at each redshift.