Method
NumCosmoDistanceangular_diameter_curvature_scale
Declaration [src]
gdouble
nc_distance_angular_diameter_curvature_scale (
NcDistance* dist,
NcHICosmo* cosmo
)
Description [src]
We define the angular diameter curvature scale $D_a(z_\star)$ as $$D_a(z_\star) = \frac{E(z_\star)}{1 + z_\star} D_t(z_\star),$$ where $z_\star$ is the decoupling redshift, given by [nc_distance_decoupling_redshift()], $E(z_\star)$ is the normalized Hubble function [Eq. $\eqref{eq:def:Ez}$] and $D_t(z_\star)$ is the transverse comoving distance [Eq. $\eqref{eq:def:Dt}$] both computed at $z_\star$.
Parameters
cosmo-
Type:
NcHICosmoA
NcHICosmo.The data is owned by the caller of the method.