wcosmo.wcosmo.luminosity_distance

wcosmo.wcosmo.luminosity_distance(z, H0, Om0, w0=-1, method='pade')

Compute the luminosity distance using an analytic integral of the Pade approximation.

\[d_L = (1 + z') d_{H} \int_{0}^{z} \frac{dz'}{E(z'; \Omega_{m,0}, w_0)}\]

Parameters:

z: array_like

Redshift

H0: array_like

The Hubble constant in km/s/Mpc

Om0: array_like

The matter density fraction

w0: array_like

The (constant) equation of state parameter for dark energy

Returns:

luminosity_distance: array_like

The luminosity distance in Mpc