| Top | |
|
|
|
The acoustic scale is defined as
$$ A \equiv D_V (z) \frac{\sqrt{\Omega_{m0} H_0^2}}{z c},$$
where $\Omega_{m0}$ is the matter density parameter [nc_hicosmo_Omega_m0()], $c$ is the speed of light [ncm_c_c()],
$H_0$ is the Hubble parameter [nc_hicosmo_H0()] and $D_V(z)$ is the dilation scale [nc_distance_dilation_scale()].
See Section 4.5 from Eisenstein et al. (2005).
NcDataBaoA *
nc_data_bao_a_new_from_file (const gchar *filename);
Creates a new NcDataBaoA from filename
.
NcDataBaoA * nc_data_bao_a_new_from_id (NcDistance *dist,NcDataBaoId id);
void nc_data_bao_a_set_dist (NcDataBaoA *bao_a,NcDistance *dist);
Sets the distance object.