C++ (Cpp) PowerSpec_EH Examples

Example #1

File: power.c Project: CullanHowlett/PICOLA_DEV

// Calculate the power spectrum at k based on the run parameters
// =============================================================
double PowerSpec(double k) {

  double power;

  switch (WhichSpectrum) {
    case 0:
      power = Norm * pow(k, PrimordialIndex)  * TransferFunc(k) * TransferFunc(k);
      break;
    case 1:
      power = PowerSpec_Tabulated(k);
      break;
    default:
      power = PowerSpec_EH(k);
      break;
  }

  return power;
}

Example #2

File: power.c Project: savila/HALOGEN

double PowerSpec(double k)
{
  double power, alpha, Tf;

  switch (WhichSpectrum)
    {
    case 1:
      power = PowerSpec_EH(k);
      break;

    case 2:
      power = PowerSpec_Tabulated(k);
      break;

    default:
      power = PowerSpec_Efstathiou(k);
      break;
    }


  if(WDM_On == 1)
    {
      /* Eqn. (A9) in Bode, Ostriker & Turok (2001), assuming gX=1.5  */
      alpha =
	0.048 * pow((Omega - OmegaBaryon) / 0.4, 0.15) * pow(HubbleParam / 0.65,
							     1.3) * pow(1.0 / WDM_PartMass_in_kev, 1.15);
      Tf = pow(1 + pow(alpha * k * (3.085678e24 / UnitLength_in_cm), 2 * 1.2), -5.0 / 1.2);
      power *= Tf * Tf;
    }

#if defined(MULTICOMPONENTGLASSFILE) && defined(DIFFERENT_TRANSFER_FUNC)

  if(Type == 2)
    {
      power = PowerSpec_DM_2ndSpecies(k);
    }

#endif

  power *= pow(k, PrimordialIndex - 1.0);

  return power;
}