luminosity_distance¶

astropy.cosmology.funcs.luminosity_distance(z, cosmo=None)[source] [edit on github]¶

Luminosity distance in Mpc at redshift z.

This is the distance to use when converting between the bolometric flux from an object at redshift z and its bolometric luminosity.

Parameters :

z : array_like

Input redshifts.

Returns :

lumdist : ndarray, or float if input scalar

Angular diameter distance at each input redshift.