HubbleParameter#

class astropy.cosmology.traits.HubbleParameter[source]#

Bases: object

The object has attributes and methods for the Hubble parameter.

Attributes Summary

h

Dimensionless Hubble constant: h = H_0 / 100 [km/sec/Mpc].

hubble_distance

Hubble distance.

hubble_time

Hubble time.

Methods Summary

H(z)

Hubble parameter at redshift z.

Attributes Documentation

h[source]#

Dimensionless Hubble constant: h = H_0 / 100 [km/sec/Mpc].

hubble_distance[source]#

Hubble distance.

hubble_time[source]#

Hubble time.

Methods Documentation

H(z)[source]#

Hubble parameter at redshift z.

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

Input redshift.

Returns:
HQuantity [:ref: ‘frequency’]

Hubble parameter at each input redshift.