crow.cluster_modules.kernel module

The cluster kernel module.

This module holds the classes that define the kernels that can be included in the cluster abundance integrand.

class crow.cluster_modules.kernel.SpectroscopicRedshift

Bases: object

Spectroscopic-redshift kernel for abundance integrals.

Represents the idealized case where cluster redshifts are known exactly (spectroscopic precision). The kernel thus contributes a factor of unity to the redshift part of the integrand.

distribution() → ndarray[tuple[Any, ...], dtype[float64]]

Evaluate and return the redshift kernel contribution.

Returns:

Array containing the value 1.0 (dtype float64). This is intended to be broadcast with other integrand arrays.

Return type:

numpy.ndarray

class crow.cluster_modules.kernel.TrueMass

Bases: object

True-mass kernel used in abundance integrals.

This kernel represents the case where the observed mass equals the true halo mass. It therefore contributes a multiplicative factor of unity to the abundance integrand and does not alter the mass distribution.

Notes

The distribution method returns a NumPy array (dtype float) that can be broadcast with other integrand factors.

distribution() → ndarray[tuple[Any, ...], dtype[float64]]

Evaluate and return the mass kernel contribution.

Returns:

Array containing the value 1.0. This can be broadcast to the shape required by the integrand and is provided as float64.

Return type:

numpy.ndarray