comoving_volume

Protocols

StandardCosmology.comoving_volume()

DistanceMeasures.comoving_volume()

ComovingDistanceMeasures.comoving_volume()

HasComovingVolume.comoving_volume()

Reference

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

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

Comoving volume \(V_c\) in Mpc3.

This is the volume of the universe encompassed by redshifts less than z. For the case of \(\Omega_k = 0\) it is a sphere of radius comoving_distance but it is less intuitive if \(\Omega_k\) is not.

Parameters:

zArray, positional-only

z1, z2Array, positional-only

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

Returns:

Array

The comoving volume \(V_c\) in Mpc3.