def sigmaR(cosmo, R):
"""RMS variance in a top-hat sphere of radius R.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
R (float or array_like): Radius; Mpc.
Returns:
sigmaR (float or array_like): RMS variance in top-hat sphere.
"""
return _vectorize_fn(lib.sigmaR, lib.sigmaR_vec, cosmo, R)
def distance_modulus(cosmo, a):
"""Distance Modulus
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
distance_modulus (float or array_like): Distance modulus at a.
"""
return _vectorize_fn(lib.distance_modulus,
lib.distance_modulus_vec, cosmo, a)
def h_over_h0(cosmo, a):
"""Ratio of Hubble constant at `a` over Hubble constant today.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
h_over_h0 (float or array_like): H(a)/H0.
"""
return _vectorize_fn(lib.h_over_h0, lib.h_over_h0_vec, cosmo, a)
def growth_rate(cosmo, a):
"""Growth rate.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
growth_rate (float or array_like): Growth rate; .
"""
return _vectorize_fn(lib.growth_rate, lib.growth_rate_vec, cosmo, a)
def luminosity_distance(cosmo, a):
"""Luminosity distance.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
luminosity_distance (float or array_like): Luminosity distance; Mpc.
"""
return _vectorize_fn(lib.luminosity_distance,
lib.luminosity_distance_vec, cosmo, a)
def comoving_radial_distance(cosmo, a):
"""Comoving radial distance.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
comoving_radial_distance (float or array_like): Comoving radial distance; Mpc.
"""
return _vectorize_fn(lib.comoving_radial_distance,
lib.comoving_radial_distance_vec, cosmo, a)
def growth_factor_unnorm(cosmo, a):
"""Unnormalized growth factor.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
growth_factor_unnorm (float or array_like): Unnormalized growth factor, normalized to the scale factor at early times.
"""
return _vectorize_fn(lib.growth_factor_unnorm,
lib.growth_factor_unnorm_vec, cosmo, a)
def scale_factor_of_chi(cosmo, chi):
"""Scale factor, a, at a comoving distance chi.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
chi (float or array_like): Comoving distance(s); Mpc.
Returns:
scale_factor_of_chi (float or array_like): Scale factor(s), normalized to 1 today.
"""
return _vectorize_fn(lib.scale_factor_of_chi,
lib.scale_factor_of_chi_vec, cosmo, chi)
def comoving_angular_distance(cosmo, a):
"""Comoving angular distance.
NOTE this quantity is otherwise known as the transverse comoving distance, and is NOT angular diameter
distance or angular separation
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
comoving_angular_distance (float or array_like): Comoving angular distance; Mpc.
"""
return _vectorize_fn(lib.comoving_angular_distance,
lib.comoving_angular_distance_vec, cosmo, a)
def bias_clustering(cosmo, a):
"""Bias clustering, b(z), at a scale
factor, a, of the clustering sample.
TODO: Check the normalization of growth is consistent with LSS input.
Args:
cosmo (:obj:`ccl.cosmology`): Cosmological parameters.
a (float or array_like): Scale factor(s), normalized to 1 today.
Returns:
specs_bias_clustering (float or array_like): Bias at each scale factor.
"""
return _vectorize_fn(lib.specs_bias_clustering,
lib.specs_bias_clustering_vec, cosmo, a)
