Virtual Method

NumCosmoHICosmobgp_cs2

Declaration [src]

gdouble
bgp_cs2 (
  NcHICosmo* cosmo,
  const gdouble z
)

Description [src]

Baryon-photon plasma speed of sound squared, $$c_s^{b\gamma2} = (\dot{\rho}b + \dot{\rho}\gamma) / (p_b + p_\gamma).$$.

Parameters

z

Type: const gdouble

Redshift $z$.

Return value

Type: gdouble

The comoving distance $D_c(z)$ in Mpc.