Virtual Method

NumCosmoRecombXHeII

Declaration [src] 

gdouble
XHeII (
  NcRecomb* recomb,
  NcHICosmo* cosmo,
  const gdouble lambda
)

Description [src]

Calculates the value of $X_\HeII$ at lambda.

Parameters

cosmo

Type: NcHICosmo

A NcHICosmo.

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

Type: const gdouble

$\lambda = - \ln(1+z)$.

Return value

Type: gdouble

$X_\HeII$.