def halomodel_matter_power(cosmo, k, a):
"""Matter power spectrum from halo model assuming NFW density profiles
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float): scale factor.
k (float or array_like): wavenumber
Returns:
halomodel_matter_power (float or array_like): matter power spectrum from halo model
"""
return _vectorize_fn2(lib.halomodel_matter_power,
lib.halomodel_matter_power_vec, cosmo, k, a)
def twohalo_matter_power(cosmo, k, a):
"""Two-halo term for matter power spectrum assuming NFW density profiles
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float): scale factor.
k (float or array_like): wavenumber
Returns:
two-halo matter power spectrum (float or array_Like): two-halo term for matter power spectrum
"""
return _vectorize_fn2(lib.twohalo_matter_power,
lib.twohalo_matter_power_vec, cosmo, k, a)
def sigmaM(cosmo, halo_mass, a):
"""RMS variance for the given halo mass of the linear power spectrum; Msun.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
halo_mass (float or array_like): Halo masses; Msun.
a (float): scale factor.
Returns:
sigmaM (float or array_like): RMS variance of halo mass.
"""
return _vectorize_fn2(lib.sigmaM, lib.sigmaM_vec, cosmo, halo_mass, a)
def sigmaR(cosmo, R, a=1.):
"""RMS variance in a top-hat sphere of radius R in Mpc.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
R (float or array_like): Radius; Mpc.
a (float): optional scale factor; defaults to a=1
Returns:
float or array_like: RMS variance in the density field in top-hat sphere; Mpc.
"""
return _vectorize_fn2(lib.sigmaR, lib.sigmaR_vec, cosmo, R, a)
def linear_matter_power(cosmo, k, a):
"""The linear matter power spectrum; Mpc^3.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
k (float or array_like): Wavenumber; Mpc^-1.
a (float): Scale factor.
Returns:
linear_matter_power (float or array_like): Linear matter power spectrum; Mpc^3.
"""
return _vectorize_fn2(lib.linear_matter_power, lib.linear_matter_power_vec,
cosmo, k, a)
def sigmaV(cosmo, R, a=1.):
"""RMS variance in the displacement field in a top-hat sphere of radius R.
The linear displacement field is the gradient of the linear density field.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
R (float or array_like): Radius; Mpc.
a (float): optional scale factor; defaults to a=1
Returns:
sigmaV (float or array_like): RMS variance in the displacement field in top-hat sphere.
"""
return _vectorize_fn2(lib.sigmaV, lib.sigmaV_vec, cosmo, R, a)