proper_distance

Protocols

StandardCosmology.proper_distance()

DistanceMeasures.proper_distance()

ProperDistanceMeasures.proper_distance()

HasProperDistance.proper_distance()

Reference

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

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

Proper distance \(d\) in Mpc.

The proper distance is the distance between two objects at redshifts z1 and z2, including the effects of the expansion of the universe.

Parameters:

zArray, positional-only

z1, z2Array, positional-only

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

Returns:

Array

The proper distance \(d\) in Mpc.