luminosity_distance

Protocols

StandardCosmology.luminosity_distance()

DistanceMeasures.luminosity_distance()

HasLuminosityDistance.luminosity_distance()

Reference

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

cosmo.luminosity_distance(z1: InputT, z2: InputT, /) → Array

Redshift-dependent luminosity distance \(d_L\) in Mpc.

This is the distance to use when converting between the bolometric flux from an object at redshift z and its bolometric luminosity [1].

Parameters:

zArray, positional-only

z1, z2Array, positional-only

Input redshifts. If one argument z is given, the distance \(d_L(0, z)\) is returned. If two arguments z1, z2 are given, the distance \(d_L(z_1, z_2)\) is returned.

Returns:

Array

The luminosity distance \(d_L\) in Mpc.

References

[1]

Weinberg, 1972, pp 420-424; Weedman, 1986, pp 60-62.