Method

NumCosmoRecombSeagerhummer_HeI_case_B_dTm

Declaration [src] 

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

Description [src]

The case B $\HeII$ recombination coefficient derivative with respect to Tm.

The derivative of the fitting formula of the case B recombination coefficient for $\HeII$ nc_recomb_seager_hummer_HeI_case_B ().

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 $\HeII$, $d\alpha_H/dT_m$.