scale_factor

Protocols

StandardCosmology.scale_factor()

DistanceMeasures.scale_factor()

ScaleFactor.scale_factor()

HasScaleFactor.scale_factor()

Reference

cosmo.scale_factor(z: InputT, /) → Array

Redshift-dependenct scale factor.

The scale factor is defined as \(a = a_0 / (1 + z)\).

Parameters:

zArray or float, positional-only

The redshift(s) at which to evaluate the scale factor.

Returns:

Array