Function

NumCosmoRecombdtau_dlambda_Xe

Declaration [src] 

gdouble
nc_recomb_dtau_dlambda_Xe (
  NcHICosmo* cosmo,
  const gdouble lambda
)

Description [src]

The derivative of the optical depth [Eq. \eqref{eq:def:dtaudlambda}] over the ionization fraction $X_\e$ [Eq. \eqref{eq:def:Xe}].

Parameters

cosmo

Type: NcHICosmo

A NcHICosmo.

The data is owned by the caller of the function.
lambda

Type: const gdouble

$\lambda = - \ln(1+z)$.

Return value

Type: gdouble

$X_\e^{-1}d\tau/d\lambda$.