pyhalofit.halofit module

class pyhalofit.halofit.halofit

Bases: object

halofit class

This is the class of halofit, which is the fitting formula developed in Takahashi et al. (2012)

get_cosmology()

Get current cosmological paramters.

Returns

cosmo_dict – ditionary of cosmological parameters.

Return type

dict

get_pkhalo()

Getting halofit power spectrum.

Returns

pkhalo – halofit power spectrum.

Return type

ndarray

set_cosmology(cosmo_dict)

Settig cosmological parameters

Parameters

cosmo_dict (dict) – dictionary of cosmological parameters. cosmo_dict needs to include, Omega_de0, Omega_K0, w0, wa, h. Omega_m0 is computed internally by Omega_m0 = 1.0 - Omega_de0 - Omega_K0

set_pklin(k, pklin, z, unit='h/Mpc')

Setting Fourier mode and linear matter power spectrum at desired redshift.

Parameters

  • k (ndarray) – Array of Fourier modes

  • pklin (ndarray) – Array of linear matter power spectrum at redshift z

  • z (float) – Cosmological redshift

  • unit (str) – Unit of Fourier mode. ‘/Mpc’ and ‘h/Mpc’ are available. Default is ‘h/Mpc’.

sigma(R)

Computing the variance of linear matter power spectrum.

Parameters

R (float) – Smoothing scale to compute the variance of linear power spectrum.

Returns

sigma – variance of linear power smoothed at scale \(R\).

Return type

float