DarkMatterComponent

class astropy.cosmology.traits.DarkMatterComponent

Bases: object

The cosmology has attributes and methods for the dark matter density.

This trait provides an Odm method that returns the dark matter density parameter (i.e., total matter minus baryons) at redshift z.

Methods Summary

Odm(z)

Return the density parameter for dark matter at redshift z.

Methods Documentation

Odm(z)

Return the density parameter for dark matter at redshift z.

Parameters:

zQuantity-like [‘redshift’], numpy:array_like

Input redshift.

Changed in version 7.0: Passing z as a keyword argument is deprecated.

Returns:

Odmndarray

The density of dark matter relative to the critical density at each redshift.