comoving_distance

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

Comoving distance in Mpc at redshift z.

The comoving distance along the line-of-sight between two objects remains constant with time for objects in the Hubble flow.

Parameters :

z : array_like

Input redshifts.

Returns :

codist : ndarray, or float if input scalar

Comoving distance at each input redshift.

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