Method

NumCosmoRecombSeagerhummer_HeI_case_B

Declaration [src] 

gdouble
nc_recomb_seager_hummer_HeI_case_B (
  NcRecombSeager* recomb_seager,
  NcHICosmo* cosmo,
  const gdouble Tm
)

Description [src]

The case B $\HeII$ recombination coefficient.

The fitting formula of the case B recombination coefficient for $\HeII$ as in [Hummer (1998)][XHummer1998].

Parameters

cosmo

Type: NcHICosmo

A NcHICosmo.

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

Type: const gdouble

The matter (baryons) temperature $T_m$.

Return value

Type: gdouble

The value of the case B recombination coefficient for $\HeII$, $\alpha_H$ .